2019 In Archosaur Paleontology

This article records new taxa of fossil archosaurs of every kind that are described during the year 2019, as well as other significant discoveries and events related to paleontology of archosaurs that occurred in 2019.

Pseudosuchians

New pseudosuchian taxa

Pseudosuchian research

* A study on the bone histology of '' Coahomasuchus chathamensis'', and on its implications for inferring ontogeny and growth strategy of this species, is published by Hoffman, Heckert & Zanno (2019).
* Tolchard ''et al.'' (2019) revise fragmentary archosaurian remains from the latest Triassic lower Elliot Formation (South Africa), interpreting them as fossils of at least two distinct taxa of "rauisuchians", thus representing the southernmost palaeolatitudes that these animals are known to have occurred, their first definitive remains from southern Africa, and some of the most recent records of members of this grade.
* A study on the anatomy of the skeleton of ''Poposaurus gracilis'' is published online by Schachner ''et al.'' (2019).
* A study on the age of sandstones of the Badong Formation preserving fossils of ''Lotosaurus adentus'' is published by Wang ''et al.'' (2019).
* Description of the anatomy of the skull of a new specimen of ''Prestosuchus chiniquensis'' from the ''Dinodontosaurus'' Assemblage Zone of the Pinheiros-Chiniquá Sequence, Santa Maria Super sequence (Brazil) is published by Mastrantonio ''et al.'' (2019), who also present the first description of a rauisuchian cranial endocast.
* A study on habitat shifts during the evolutionary history of Crocodylomorpha is published by Wilberg, Turner & Brochu (2019).
* A study on patterns of body size evolution of crocodylomorphs is published by Godoy ''et al.'' (2019).
* A study on the quality of the fossil record of non-marine crocodylomorphs is published by Mannion ''et al.'' (2019).
* A study on the evolution of skull shape in crocodylomorphs is published online by Godoy (2019).
* A study on the diversity of feeding ecologies of Mesozoic crocodyliforms is published by Melstrom & Irmis (2019).
* A study on patterns of crocodyliform snout shape, on their inferred diet and on the relationship between form and function of crocodyliform skull shape throughout the evolutionary history of this group is published online by Drumheller & Wilberg (2019).
* New fossil material (an isolated left dentary) of '' Orthosuchus stormbergi'' is described from the Upper Elliot Formation (South Africa) by Dollman, Viglietti & Choiniere (2019), who also examine the stratigraphic positions of all valid crocodylomorph specimens from the main Karoo Basin.
* Teleosaurid and metriorhynchid teeth are described from, respectively, the Middle Jurassic (Aalenian) and Upper Jurassic (Tithonian) of Slovakia by Čerňanský ''et al.'' (2019), representing the first record of members of both families from the country.
* Partial skeleton of a teleosauroid crocodylomorph, representing the most recent record of a definitive non- machimosaurin teleosauroid in Africa reported so far, is described from the Callovian of Tunisia by Dridi & Johnson (2019).
* Fossils of a member of Teleosauroidea with an estimated body length of 9.6 m, representing the most recent definitive record of Teleosauroidea reported so far, are described from the Lower Cretaceous (upper Barremian) Paja Formation (Colombia) by Cortes ''et al.'' (2019).
* Redescription of the holotype specimens of '' Mystriosaurus laurillardi'' and ''"Steneosaurus" brevior'' and a study on the taxonomic validity and phylogenetic relationships of these species is published by Sachs ''et al.'' (2019).
* A study on the anatomy and phylogenetic relationships of metriorhynchoids from the Jurassic Rosso Ammonitico Veronese Formation (Italy) is published by Cau (2019), who provides a revised diagnosis of '' Neptunidraco ammoniticus''.
* A three-dimensionally preserved occiput of a member of the genus '' Torvoneustes'', indicating that members of this genus reached larger body sizes than previously supposed, is described from the Upper Jurassic Kimmeridge Clay Formation (United Kingdom) by Young ''et al.'' (2019).
* A study on teeth morphology and tooth enamel microstructure in ''Mariliasuchus amarali'' is published by Augusta & Zaher (2019).
* A study on the arrangement and morphology of the osteoderms of baurusuchids is published by Montefeltro (2019).
* A study on the anatomy of the pterygoid region and skull airways of ''Caipirasuchus paulistanus'' and ''C. montealtensis'' is published online by Dias ''et al.'' (2019), who report possible anatomical evidence of vocal capacity of ''C. montealtensis''.
* Description of fossils and possible gastroliths of a large-bodied sphagesaurid from the Upper Cretaceous Adamantina Formation (Brazil) is published online by Cunha ''et al.'' (2019).
* Description of new fossil material of '' Pepesuchus'' from the Upper Cretaceous Adamantina Formation (Brazil) and a study on the phylogenetic relationships of this taxon is published by Geroto & Bertini (2019).
* A study on the diagenesis of fossils of ''Montealtosuchus arrudacamposi'' from the Upper Cretaceous Adamantina Formation is published by Marchetti ''et al.'' (2019).
* A study on the phylogenetic relationships of members of Neosuchia and on the evolution of longirostry in this group is published online by Groh ''et al.'' (2019).
* A study on the taxonomic status and phylogenetic relationships of ''Sarcosuchus hartti'' is published online by Souza ''et al.'' (2019).
* Partial dyrosaurid skeleton discovered in the 1930s in Paleocene (Danian) strata along the Atlantic coast of Senegal is described by Martin, Sarr & Hautier (2019).
* Description of new dyrosaurid specimens from the Late Cretaceous–early Paleogene of New Jersey (United States), and a study on their implications for the validity of the species ''Hyposaurus rogersii'', is published online by Souza ''et al.'' (2019).
* Revision of the large-sized neosuchians '' Kansajsuchus'' and "'' Turanosuchus''" from the Late Cretaceous of Central Asia is published by Kuzmin ''et al.'' (2019), who interpret ''Kansajsuchus'' as a member of Paralligatoridae, and consider ''Turanosuchus aralensis'' to be a member of the genus ''Kansajsuchus'' belonging or related to the species ''K. extensus''.
* A study on the inner cavities of the skull of the holotype specimen of '' Lohuecosuchus megadontos'' is published by Serrano-Martínez ''et al.'' (2019).
* Revision of the fossil material of ''Allodaposuchus precedens'' from Vălioara (Romania) is published online by Narváez ''et al.'' (2019), who emend the diagnosis for this species.
* A study on palaeodiversity of eusuchians over time is published online by De Celis, Narváez & Ortega (2019).
* A tooth of a juvenile specimen of ''Deinosuchus'', providing new information on the ontogeny of this reptile, is described by Brownstein (2019).
* A well-preserved braincase of ''Diplocynodon tormis'' is described from the middle Eocene site of 'Teso de la Flecha' (Salamanca, Spain) by Serrano-Martínez ''et al.'' (2019).
* A study on the anatomy and phylogenetic relationships of ''Diplocynodon hantoniensis'' is published online by Rio ''et al.'' (2020).
* Chroust, Mazuch & Luján (2019) describe new fossil material of ''Diplocynodon'' from four sites in the Czech Republic dating to Eocene–Oligocene transition, and evaluate the implications of these fossils for the knowledge of the course of the Eocene–Oligocene cooling event in Central Europe.
* New crocodylian fossils, documenting the presence of four previously unrecognised alligatoroids, are described from the Lower Miocene Castillo Formation (Venezuela) by Solórzano ''et al.'' (2019).
* A taxonomic and phylogenetic revision of ''Necrosuchus ionensis'' is published online by Cidade, Fortier & Hsiou (2019).
* Ten late Miocene specimens of ''Mourasuchus'', tentatively assigned to the species ''M. arendsi'', are described from Bolivia and from the Solimões Formation of Brazil by Cidade ''et al.'' (2019), who also discuss the morphology of ''Mourasuchus'' and paleogeographic distribution of this genus in the Miocene of South America.
* A study on the anatomy of the holotype of ''Mourasuchus amazonensis'' and on the taxonomic status of species belonging to the genus ''Mourasuchus'' is published by Cidade ''et al.'' (2019).
* A study on the feeding habits of ''Mourasuchus'' is published by Cidade, Riff & Hsiou (2019).
* A study on the structure of the vertebral column of ''Purussaurus mirandai'', providing evidence of a deviation from the vertebral count present in all extant crocodilians, is published by Scheyer ''et al.'' (2019).
* A study on the taxonomic status of '' Balanerodus logimus'' and '' Caiman venezuelensis'' is published by Cidade ''et al.'' (2019).
* Fossils of a specimen of ''Asiatosuchus depressifrons'' from the late Paleocene of Mont de Berru (France), representing the oldest European crocodyloid remains reported so far, are described by Delfino ''et al.'' (2019).
* A study on geographical origin, historical biogeography and evolution of traits aiding dispersal of members of the genus ''Crocodylus'' is published by Nicolaï & Matzke (2019).
* Evidence of gavialine-specific atavistic characters in the skeletons of fossil tomistomines ''Penghusuchus pani'' and ''Toyotamaphimeia machikanensis'' is presented by Iijima & Kobayashi (2019).
* Skull and mandibular elements of a tomistomine (probably belonging to the genus '' Maomingosuchus'') are described from the late Eocene lignite seams of Krabi (Thailand) by Martin ''et al.'' (2019), providing evidence of tomistomines living in the tropics in the late Eocene.
* A revision of members of the genus ''Gavialis'' described on the basis of fossils from the Sivalik Hills of India and Pakistan is published by Martin (2019).
* A study on the systematics of crocodilians known from the Oligocene fossil locality of Monteviale (Italy) is published by Macaluso ''et al.'' (2019).
* A revision of fossil record of Cenozoic crocodilians from Sardinia (Italy) is published by Zoboli ''et al.'' (2019).
* A review of the fossil crocodylomorph fauna of the Cenozoic of South America is published by Cidade, Fortier & Hsiou (2019).
* A method for the quantification of size- and shape-heterodonty in members of Crocodylia is presented by D'Amore ''et al.'' (2019), who apply their method to extant and fossil crocodylomorphs.
* A study on the global diversification dynamics of crocodylians since the Cretaceous is published online by Solórzano ''et al.'' (2019).
* A study testing whether the bone ornamentation may play a role in terms of load-bearing capacity and mechanical strength of pseudosuchian osteoderms, based on data from five osteoderms of crocodylomorphs (representing four species: ''Caiman crocodilus'', ''Osteolaemus tetraspis'', ''Hyposaurus rogersii'', ''Sarcosuchus imperator'') and one aetosaur osteoderm (''Aetosaurus'' sp.), is published by Clarac ''et al.'' (2019).
* A study on the utility of head width as a body size proxy in extant crocodylians, and on its implications for estimates of body size of extinct crocodyliforms, is published by O'Brien ''et al.'' (2019).
* A study comparing skull anatomy and inferred head musculature, stress distribution in skulls and feeding mechanisms in members of the genera ''Pelagosaurus'' and ''Gavialis'', and evaluating changes in mandibular function and feeding through time in the macroevolution of Crocodylomorpha, is published by Ballell ''et al.'' (2019).
* Description of fossils of longirostrine crocodylians from the Bartonian of southern Morocco is published by Jouve, Khalloufi & Zouhri (2019), who also discuss the implications of these fossils for the knowledge of the evolution of crocodylians through the Eocene–Oligocene transition.
* A study on the diversity of Late Jurassic crocodylomorph teeth from Valmitão (Lourinhã Formation, Portugal), and on the ecological niches and feeding behaviours of crocodylomorphs from this assemblage, is published online by Guillaume ''et al.'' (2019).
* Rivera-Sylva ''et al.'' (2019) report the first crocodyliform remains from La Parrita locality (Campanian Cerro del Pueblo Formation, Coahuila, Mexico).
* Description of an isolated crocodyliform tooth from the upper Eocene Ergilin Dzo Formation (Mongolia) and a study on the implications of this fossil for the knowledge of the regional paleoclimate of the area of Mongolia during the late Eocene is published by Iijima ''et al.'' (2019).
* A study on the morphological diversity and phylogenetic affinities of crocodylomorph teeth from the Maastrichtian Tremp Formation (north-eastern Spain) is published online by Blanco ''et al.'' (2019).

Non-avian dinosaurs

New dinosaur taxa

General non-avian dinosaur research

* A study aiming to identify the most likely area for the geographic origin of dinosaurs is published by Lee ''et al.'' (2019).
* A study evaluating the impact of new fossil discoveries and changing phylogenetic hypotheses on biogeographical scenarios for dinosaur origins is published by Marsola ''et al.'' (2019).
* A study aiming to determine the degree of differences of dinosaur phylogenies inferred from skull and postcranial characters is published online by Li, Ruta & Wills (2019).
* A study on the chronostratigraphic position of the uppermost Cretaceous dinosaur localities from south-western Europe, and on their implications for inferring the course of the Maastrichtian dinosaur turnover, is published by Fondevilla ''et al.'' (2019).
* A study aiming to quantify the habitat of latest Cretaceous North American dinosaurs, based on data from fossil occurrences and climatic and environmental modelling, and evaluating its implications for inferring whether dinosaur diversity was in decline prior to the Cretaceous–Paleogene extinction event, is published by Chiarenza ''et al.'' (2019).
* A study on factors determining the community richness of large herbivorous dinosaurs from the Campanian Dinosaur Park Formation (Alberta, Canada) is published by Mallon (2019).
* A review of the fossil record of Late Cretaceous non-avian dinosaurs from the James Ross Basin (Antarctica) is published by Lamanna ''et al.'' (2019), who also describe fragmentary new ankylosaur and ornithopod material from the Cape Lamb Member of the Snow Hill Island Formation and the Sandwich Bluff Member of the Lopez de Bertodano Formation.
* A review and evaluation of studies on molecular data from Mesozoic dinosaur fossils is published by Schweitzer ''et al.'' (2019).
* A study on the nature of putative remains of ancient proteins, blood vessels, and cells preserved with dinosaur fossils, based on data from fossils of ''Centrosaurus apertus'' from the Dinosaur Park Formation (Alberta, Canada), is published by Saitta ''et al.'' (2019).
* A study on the olfactory bulb ratio (the size of the olfactory bulb relative to the cerebral hemisphere) in dinosaurs, and on its implication for inferring olfactory acuity of dinosaurs, is published by Hughes & Finarelli (2019).
* A study on vascular correlates in dinosaur skulls, evaluating their implications for the knowledge of thermoregulatory strategies of dinosaurs of different sizes, is published online by Porter & Witmer (2019).
* A review of the diversity of the musculature of the skulls of herbivorous dinosaurs is published online by Nabavizadeh (2019).
* A study on the evolution of different modes of herbivory in non-avian dinosaurs is published online by Button & Zanno (2019).
* A study on the structure of eggshells of eggs produced by ''Lufengosaurus'', ''Massospondylus'' and ''Mussaurus'', representing the oldest confirmed amniote eggshells reported so far, is published by Stein ''et al.'' (2019).
* Description of dinosaur egg fossils from the late Early Cretaceous Chaochuan Formation (Zhejiang, China) is published by Zhang ''et al.'' (2019), who name a new ootaxon '' Multifissoolithus chianensis''.
* Dinosaurs eggs assigned to the oofamily Dendroolithidae are described from the Late Cretaceous Zhaoying Formation (China) by He ''et al.'' (2019), who name a new ootaxon '' Pionoolithus quyuangangensis''.
* Dinosaurs eggs assigned to the oofamily Faveoloolithidae are described from the Upper Cretaceous (Coniacian–Santonian) siltstones within the Daeri Andesite of the Wido Volcanics (South Korea) by Kim ''et al.'' (2019), who name a new ootaxon '' Propagoolithus widoensis''.
* Possible dromaeosaurid eggshells are described from the Upper Cretaceous Wido Volcanics (South Korea) by Choi & Lee (2019), who name a new ootaxon '' Reticuloolithus acicularis''.
* Description of an intact dinosaur egg from the Cretaceous Wayan Formation (Idaho, United States) assigned to the oogenus ''Macroelongatoolithus'' is published by Simon ''et al.'' (2019), who interpret this specimen as evidence of presence of a ''Gigantoraptor''-sized oviraptorosaur in western North America.
* A study on the embryonic metabolism of ''Troodon formosus'', ''Protoceratops andrewsi'' and ''Hypacrosaurus stebingeri'', and on its implications for the knowledge of the incubation times for dinosaur eggs, is published by Lee (2019).
* A new dinosaur nesting site, preserving at least 15 egg clutches probably laid by a non-avian theropod dinosaur, is described from the Upper Cretaceous Javkhlant Formation (Mongolia) by Tanaka ''et al.'' (2019), who interpret the finding as evidence of colonial nesting in a non-avian dinosaur.
* A study aiming to determine possible shifts from quadrupedality to bipedality during ontogeny in dinosaurs is published online by Chapelle ''et al.'' (2019).
* A review of evidence of probable responses of dinosaurs to serious injuries is presented by Hearn & Williams (2019).
* A study on the phylogenetic placement of ''Chilesaurus diegosuarezi'' and its implications for the phylogenetic relationships of major dinosaur groups is published by Müller & Dias-da-Silva (2019).

Saurischian research

Theropod research

* A study on specimen completeness in the fossil record of non-avian theropod dinosaurs is published by Cashmore & Butler (2019).
* A study on the distribution of discrete dental characters in theropod dinosaurs, and on the taxonomic value of theropod teeth, is published by Hendrickx ''et al.'' (2019).
* A study aiming to evaluate whether the maximum body size of theropod dinosaurs increased across the Triassic-Jurassic boundary is published online by Griffin & Nesbitt (2019).
* A revision of theropod dinosaur fossils from the Late Jurassic to mid-Cretaceous of Southeast Asia is published by Samathi, Chanthasit & Sander (2019).
* Description of theropod dinosaur teeth from the Lower Cretaceous (Barremian-Aptian) Ilek Formation (West Siberia, Russia) is published by Averianov, Ivantsov & Skutschas (2019).
* A study re-assessing the evidence for evolutionary allometric trends in the forelimbs of non-avian theropod dinosaurs is published by Palma Liberona ''et al.'' (2019).
* Redescription of the holotype specimen of ''Chindesaurus bryansmalli'' and a study on the phylogenetic relationships of this species is published by Marsh ''et al.'' (2019).
* Description of two fragmentary neotheropod specimens from the Upper Triassic Bull Canyon Formation (New Mexico, United States), and a study on their implications for the knowledge of body size evolution among early theropods, is published by Griffin (2019).
* A study on the anatomy of the braincase, the skull endocast and the inner ear of ''Zupaysaurus rougieri'' is published by Paulina-Carabajal, Ezcurra & Novas (2019).
* A study on range of motion and functions of the forelimbs of ''Dilophosaurus wetherilli'' is published by Senter & Sullivan (2019).
* A study on the paleobiology of ''Cryolophosaurus'' is published by Yun (2019).
* A study on tooth formation and replacement rates in ''Majungasaurus'', ''Ceratosaurus'' and ''Allosaurus'' is published by D'Emic ''et al.'' (2019).
* A study on the ecology of ''Ceratosaurus'' is published by Yun (2019).
* A study on the phylogenetic relationships of ''Afromimus tenerensis'' is published by Cerroni ''et al.'' (2019), who consider this taxon to be more likely an abelisauroid rather than an ornithomimosaur.
* Description of isolated neck vertebrae of abelisauroid theropods from the Cretaceous Kem Kem Beds (Morocco) and a study on the phylogenetic affinities of these fossils is published online by Smyth ''et al.'' (2019).
* Partially preserved ilium of an indeterminate abelisaur theropod is reported from the Upper Cretaceous Kem Kem Beds (Morocco) by Zitouni ''et al.'' (2019); however Smyth ''et al.'' (2019) reinterpret this specimen as a fossil of ''Spinosaurus aegyptiacus'', while Samathi (2024) reinterprets this bone as a fossil of a spinosaurine spinosaurid of uncertain generic placement, possibly distinct from ''S. aegyptiacus''.
* A study on the anatomy of the brain, braincase and inner ear of ''Carnotaurus sastrei'' is published by Cerroni & Paulina-Carabajal (2019).
* A study on the phylogenetic affinities of a tooth previously considered to be part of the holotype of ''Aerosteon riocoloradensis'' is published online by Hendrickx, Tschopp & Ezcurra (2019), who consider this fossil to be an abelisaurid tooth.
* Megalosaurid teeth resembling teeth of ''Torvosaurus'' are described from the Upper Jurassic of Uruguay and Tanzania by Soto, Toriño & Perea (2019).
* Isolated spinosaurid teeth are described from the Lower Cretaceous of Kut Island (Thailand) by Buffetaut ''et al.'' (2019).
* New spinosaurid specimens are described from the Kem Kem Beds (Morocco) by Arden ''et al.'' (2019), who interpret these specimens as providing evidence of aquatic adaptations in the skulls of spinosaurids, and name a new clade Spinosaurini; the study is subsequently criticized by Hone & Holtz (2019).
* New fossil material of juvenile spinosaurids is described from the Kem Kem Beds by Lakin & Longrich (2019).
* New theropod fossils, including partial tail vertebra of a member of Megaraptora and an association of tail vertebrae and pelvic elements displaying a combination of characteristics that are present in megaraptorid and carcharodontosaurid theropods, are described from the early Late Cretaceous Griman Creek Formation at Lightning Ridge, New South Wales (Australia) by Brougham, Smith & Bell (2019).
* Partial postcranial skeleton of a probable carcharodontosaurian theropod is described from the Upper Jurassic (Tithonian) Freixial Formation (Portugal) by Malafaia ''et al.'' (2019).
* Description of the anatomy of the axial skeleton of ''Concavenator corcovatus'' is published by Cuesta, Ortega & Sanz (2019).
* A study on the anatomy of the brain and inner ear of ''Giganotosaurus carolinii'' is published online by Paulina-Carabajal & Nieto (2019).
* A study on the anatomy of ''Murusraptor barrosaensis'', and on its implications for inferring the phylogenetic placement of megaraptorans within Theropoda, is published by Rolando, Novas & Agnolín (2019).
* New fossil material of a megaraptorid belonging or related to the species ''Australovenator wintonensis'' is described from the Lower Cretaceous (Albian) Eric the Red West site (Eumeralla Formation; Victoria, Australia) by Poropat ''et al.'' (2019).
* A study comparing different methods of assessing morphological diversity of coelurosaurian mandibles is published online by Schaeffer ''et al.'' (2019).
* A study on the anatomy of the skull of '' Bicentenaria argentina'' is published online by Aranciaga-Rolando, Cerroni & Novas (2019).
* New postcranial bones of ''Kileskus aristotocus'', providing new information on the anatomy of this species, are described from the Middle Jurassic (Itat Formation) Itat Formation (Russia) by Averianov ''et al.'' (2019).
* A study on the agility and turning capability of tyrannosaurids and other large theropods is published by Snively ''et al.'' (2019), who argue that tyrannosaurids could turn with greater agility, thus pivoting more quickly, than other large theropods, which enhanced their ability to pursue and subdue prey.
* A study on the taxonomic identity of the tyrannosaurid specimen CMN 11315 from the lower Maastrichtian Tolman Member of the Horseshoe Canyon Formation (Alberta, Canada) is published online by Mallon ''et al.'' (2019).
* A study on the taxonomic identity of the juvenile tyrannosaurid specimen TMP 1994.143.1, formerly assigned to the genus ''Daspletosaurus'', is published by Voris ''et al.'', who reinterpret this specimen as belonging to the species ''Gorgosaurus libratus'', and describe a new postorbital from the Dinosaur Park Formation (Alberta, Canada) belonging to a small juvenile ''Daspletosaurus''.
* A study on the tooth replacement patterns in tyrannosaurid theropods, as indicated by data from a juvenile specimen of ''Tarbosaurus bataar'', is published by Hanai & Tsuihiji (2019).
* A study on teeth of ''Tarbosaurus bataar'' and its potential prey species from the Nemegt Formation (Mongolia), aiming to infer the diet of this dinosaur and seasonal climatic variations in the area of Mongolia in the early Maastrichtian on the basis of stable isotope data from tooth enamel, is published online by Owocki ''et al.'' (2019).
* A study on the complexity and modularity of the skull of ''Tyrannosaurus rex'' is published by Werneburg ''et al.'' (2019).
* Traces preserved on a tail vertebra of a hadrosaurid dinosaur from the Upper Cretaceous Hell Creek Formation (Montana, United States) are described by Peterson & Daus (2019), who interpret their finding as feeding traces produced by a late-stage juvenile ''Tyrannosaurus rex''.
* A large specimen of ''Tyrannosaurus rex'' ( RSM P2523.8) with an estimated body mass exceeding other known ''T. rex'' specimens and representatives of all other gigantic terrestrial theropods is described by Persons, Currie & Erickson (2019).
* A study testing the biomechanical performance of the skull of ''Tyrannosaurus rex'' is published online by Cost ''et al.'' (2019).
* A study on tooth replacement in a well-preserved skull of ''Tyrannosaurus rex'' from the Maastrichtian Hell Creek Formation (Montana, United States) is published online by Sattler & Schwarz (2019).
* A study aiming to determine the processes contributing to the preservation of soft tissue structures and proteins of ''Tyrannosaurus rex'' is published by Boatman ''et al.'' (2019).
* Teeth on a (probably non-tyrannosaurid) tyrannosauroid and a dromaeosaurid are described from the Maastrichtian Mount Laurel Formation (New Jersey, United States) by Brownstein (2019).
* Description of an ornithomimid specimen UALVP 16182, putatively assigned to the genus ''Dromiceiomimus'', and a study on the validity of this genus is published by Macdonald & Currie (2019).
* A study on the morphometrics of teeth of ''Richardoestesia asiatica'' from the Upper Cretaceous Khodzhakul, Bissekty and Aitym formations of Uzbekistan is published by Averianov & Sues (2019).
* A study on the bone histology of a metatarsal bone of the holotype specimen of ''Xixianykus zhangi'' is published by Qin, Zhao & Xu (2019).
* A study on the anatomy of the skull of ''Beipiaosaurus inexpectus'' is published by Liao & Xu (2019).
* A study on form, function and evolution of skulls of members of Oviraptorosauria is published online by Ma ''et al.'' (2019).
* A study on the wing performance of ''Caudipteryx'' is published by Talori ''et al.'' (2019).
* A study on the aerodynamic capacity of feathered forelimbs of ''Caudipteryx'' is published by Talori & Zhao (2019).
* Description of an avimimid bonebed assemblage from the Iren Dabasu Formation of northern China, providing new information on the growth of avimimids, is published by Funston ''et al.'' (2019).
* Description of new caenagnathid mandibles from the Dinosaur Park Formation (Alberta, Canada) and a study on their histology is published online by Funston ''et al.'' (2019).
* A reconstruction of the architecture of the oviraptorid egg clutch, based on data from five clutches from the Upper Cretaceous Nanxiong Group (Jiangxi, China) is presented by Yang ''et al.'' (2019), who re-evaluate the hypothesis of thermoregulatory contact incubation of eggs as an explanation for the discoveries of associations of adult oviraptorosaurs with egg clutches.
* A study on the reproductive biology of oviraptorids, based on data from a partial clutch of eggs from the Upper Cretaceous Nanxiong Group, is published online by Yang ''et al.'' (2019).
* A study on the function of the enlarged "sickle claw" on the second toe of dromaeosaurid theropods is published by Bishop (2019).
* An ungual phalanx of a dromaeosaurid theropod is described from the Blagoveshchensk area (Russia) by Bolotskii, Bolotskii & Sorokin (2019).
* A study on the anatomy, taphonomy, environmental setting and phylogenetic position of '' Halszkaraptor escuilliei'' is published by Brownstein (2019); the study is subsequently criticized by Cau (2020).
* A study on a fossil lizard found in the abdomen of a specimen of ''Microraptor zhaoianus'' from the Lower Cretaceous Jiufotang Formation (China), evaluating its implications for the knowledge of dromaeosaurid digestion, is published by O'Connor ''et al.'' (2019).
* Description of the anatomy of the skull of ''Saurornitholestes langstoni'', based on data from an almost complete skeleton from the Campanian Dinosaur Park Formation (Alberta, Canada), is published online by Currie & Evans (2019).
* Histological analysis of the forelimb bones of ''Daliansaurus liaoningensis'' is presented by Shen ''et al.'' (2019).
* Evidence indicating that the pennaceous feathers of ''Anchiornis'' were composed of both feather β-keratins and α-keratins is presented by Pan ''et al.'' (2019); the study is subsequently criticized by Saitta & Vinther (2019).
* Isolated theropod teeth, interpreted as most likely representing at least two species, are described from the Middle Jurassic Valtos Sandstone and Lealt Shale Formations of Skye (Scotland) by Young ''et al.'' (2019).

Sauropodomorph research

* A study aiming to explain high diversity of early evolutionary branches of sauropodomorph dinosaurs is published online by Müller & Garcia (2019).
* A study on the anatomy and phylogenetic relationships of ''Pampadromaeus barberenai'' is published by Langer ''et al.'' (2019).
* A dinosauriform femur, possibly of a juvenile specimen of the species ''Pampadromaeus barberenai'', is described from the Late Triassic of southern Brazil by Müller ''et al.'' (2019).
* A study on the anatomy of the braincase of '' Saturnalia tupiniquim'' is published by Bronzati, Langer & Rauhut (2019).
* Description of all available skull bones of ''Saturnalia tupiniquim'' except the braincase, evaluating the implications of this taxon for the knowledge of the early evolution of the sauropodomorph feeding behaviour, is published by Bronzati, Müller & Langer (2019).
* A study on the phylogenetic relationships of ''Unaysaurus tolentinoi'' is published online by McPhee ''et al.'' (2019).
* A study on the anatomy of the skull of ''Macrocollum itaquii'' and on the phylogenetic relationships of this species is published online by Müller (2019).
* A study on the bony labyrinth scale and geometry through ontogeny in ''Massospondylus carinatus'', evaluating whether the putative gait change from quadrupedal juvenile to bipedal adult is reflected in labyrinth morphology, will be published by Neenan ''et al.'' (2019).
* Description of the anatomy of the postcranial skeleton of the neotype specimen of ''Massospondylus carinatus'' is published by Barrett ''et al.'' (2019).
* Redescription of the anatomy of the skull of ''Jingshanosaurus xinwaensis'' is published online by Zhang ''et al.'' (2019), who consider ''Chuxiongosaurus lufengensis'' to be a junior synonym of ''J. xinwaensis''.
* A study on the anatomy of the axial skeleton of ''Xingxiulong chengi'' is published online by Wang ''et al.'' (2019).
* A study on changes of body mass and center of mass of ''Mussaurus patagonicus'' during its ontogeny, and on their potential relationship with the locomotor stance of this dinosaur, is published by Otero ''et al.'' (2019).
* A study on the leverage of forelimb muscles in the transition from the narrow-gauge stance of basal sauropods to a wide-gauge stance in titanosaurs is published by Klinkhamer ''et al.'' (2019).
* A study on the hind foot posture and biomechanical capabilities of ''Rhoetosaurus brownei'' is published by Jannel ''et al.'' (2019).
* A study on the age of the fossils of ''Rhoetosaurus brownei'' is published by Todd ''et al.'' (2019).
* An isolated tooth-crown of a member of Eusauropoda, possibly a member of Mamenchisauridae or Euhelopodidae, is described from the Upper Jurassic Qigu Formation (China) by Maisch & Matzke (2019), representing the first record of a eusauropod from this formation reported so far.
* A cervical vertebra of a member of the genus ''Omeisaurus'' is described from the Middle Jurassic Lower Member of the Shaximiao Formation (China) by Tan ''et al.'' (2019), providing new information on the skeletal morphology of this genus, and representing the easternmost occurrence of ''Omeisaurus'' reported so far.
* Possible mamenchisaurid teeth are described from the Middle Jurassic Itat Formation (Russia) by Averianov ''et al.'' (2019).
* A study on the age of the fossils of members of the genus ''Mamenchisaurus'' from the Suining Formation in the Sichuan Basin (China) is published by Wang ''et al.'' (2019).
* A study on the anatomy and affinities of ''Lapparentosaurus madagascariensis'' is published by Raveloson, Clark & Rasoamiaramana (2019).
* Partial vertebra of a sauropod dinosaur belonging to the group Turiasauria is described from the Lower Cretaceous Wealden Supergroup (United Kingdom) by Mannion (2019).
* Description and a study on the affinities of sauropod teeth from the Middle Jurassic (Bathonian) Sakahara Formation (Madagascar) is published online by Bindellini & Dal Sasso (2019), who report evidence of presence of Titanosauriformes in the Bathonian.
* Description of isolated sauropod vertebrae from the Oxford Clay Formation (United Kingdom), indicative of a higher sauropod biodiversity in this formation than previously recognised, is published by Holwerda, Evans & Liston (2019).
* Revision of the taxonomic diversity of sauropod dinosaurs from a historic Carnegie Museum locality (Red Fork of the Powder River Quarry B) in northern Wyoming (Morrison Formation) is published by Tschopp ''et al.'' (2019).
* A study on pneumatic structures in the vertebrae of '' Pilmatueia faundezi'' is published online by Windholz, Coria & Zurriaguz (2019).
* A study on the anatomy of the appendicular skeleton of ''Europasaurus holgeri'' and on the phylogenetic relationships of this species is published online by Carballido ''et al.'' (2019).
* Redescription of brachiosaurid fossil material from the Upper Jurassic Morrison Formation (Colorado, United States), including a mostly complete skull discovered in 1883, is published online by D'Emic & Carrano (2019).
* A study on the phylogenetic relationships of ''Galvesaurus herreroi'' is published by Pérez-Pueyo ''et al.'' (2019).
* A study on the phylogenetic relationships of the Late Jurassic sauropod dinosaurs from the Tendaguru Formation of Tanzania (''Australodocus bohetii'', ''Janenschia robusta'' and ''Tendaguria tanzaniensis'') is published by Mannion ''et al.'' (2019).
* The first confirmed fossil of a sauropod dinosaur from Ethiopia (an isolated tooth) is reported from the Upper Jurassic Mugher Mudstone by Goodwin ''et al.'' (2019).
* A study on the affinities of the sauropod dinosaur known from an isolated Metacarpal bones, metacarpal from the Upper Jurassic (Oxfordian (stage), Oxfordian) Jagua Formation (Cuba) is published online by Apesteguía, Izquierdo & Iturralde-Vinent (2019).
* A study on isolated sauropod teeth from the Early Cretaceous Teete locality (Batylykh Formation) (Yakutia, Russia), representing the northernmost sauropod record in the Northern Hemisphere reported so far, is published online by Averianov ''et al.'' (2019).
* Redescription of ''Jiangshanosaurus lixianensis'', a study on the anatomy of ''Dongyangosaurus sinensis'' and a study on the phylogenetic relationships of these species is published by Mannion ''et al.'' (2019).
* New fossil material of Titanosauriformes, titanosauriform sauropods is described from the Upper Cretaceous Daijiaping Formation (Hunan, China) by Han ''et al.'' (2019).
* A study on the long bone histology in early juvenile titanosaur sauropods, evaluating its implications for the knowledge of early stages of development of these dinosaurs, is published online by González ''et al.'' (2019).
* A study on the neurology and phylogenetic affinities of a titanosaurian braincase from the Campanian locality of Fox-Amphoux-Métisson (southeastern France) is published by Knoll ''et al.'' (2019).
* Tail vertebrae of lithostrotian titanosaurs are described from the Lower Cretaceous Ilek Formation (Krasnoyarsk Krai, Russia) by Averianov, Ivantsov & Skutschas (2019).
* A study on the anatomy of the appendicular skeleton of South American titanosaur sauropods and on its implications for the knowledge of the phylogenetic relationships of these sauropods is published by Bernardo Javier González Riga, González Riga ''et al.'' (2019), who name a new clade Colossosauria.
* Description of titanosaur sauropod vertebrae from the Upper Cretaceous Lameta Formation (India) is published by Jeffrey A. Wilson, Wilson ''et al.'' (2019).
* Description of the anatomy of the braincase of ''Malawisaurus dixeyi'' is published by Andrzejewski ''et al.'' (2019), who present digital reconstructions of the endocast and inner ear of this species based on CT scanning.
* A study on the anatomy and phylogenetic relationships of ''Uberabatitan ribeiroi'' is published by Silva ''et al.'' (2019).
* A study on vertebral pneumaticity in ''Uberabatitan ribeiroi'', indicating that diagenesis can obliterate traces of bone pneumaticity, is published online by Aureliano ''et al.'' (2019).
* Fossils of a titanosaur sauropod related to ''Rapetosaurus'' and the indeterminate Italian titanosaur specimen Museo Civico di Storia Naturale di Milano, MSNM V7157 are described from the Algora vertebrate fossil site located in the Cenomanian strata of the Arenas de Utrillas Formation (Spain) by Mocho ''et al.'' (2019).
* Description of five articulated sauropod dorsal vertebrae from the Upper Cretaceous Nemegt Formation, possibly belonging to the species ''Nemegtosaurus mongoliensis'', is published by Averianov & Lopatin (2019), who also study the anatomy of sauropod Femur, femora from the Nemegt Formation, and argue that ''N. mongoliensis'' is likely to be distinct from ''Opisthocoelicaudia skarzynskii''.

Ornithischian research

* A study on the evolution of the Femur, femoral fourth trochanter in ornithischian dinosaurs is published online by Persons & Currie (2019).
* A study on the taphonomy and histology of the ornithischian (ankylosaurian and ornithopod) fossils from the La Cantalera-1 site (Lower Cretaceous Blesa Formation, Spain) is published by Perales-Gogenola ''et al.'' (2019).

Thyreophoran research

* Studies on the anatomy of the skull and postcranial skeleton of ''Scelidosaurus harrisonii'' are published online by David B. Norman, Norman (2019).
* A study on the holotype specimen of ''Bienosaurus lufengensis'', and on the taxonomic validity and phylogenetic relationships of this dinosaur, is published by Raven ''et al.'' (2019).
* A study on the Morphology (biology), morphological diversity of Stegosauria, stegosaurs through the evolutionary history of the group is published by Romano (2019).
* Two new stegosaurian specimens from the northernmost outcrops of the Morrison Formation in Montana, one of which is the northernmost occurrence of a dinosaur from the Morrison Formation reported so far, are described by Woodruff, Trexler & Susannah Maidment, Maidment (2019).
* Description of a new specimen of ''Miragaia longicollum'' and a study on the taxonomic validity and phylogenetic relationships of this species is published by Costa & Octávio Mateus, Mateus (2019), who transfer the species ''Alcovasaurus longispinus'' to the genus ''Miragaia''.
* Plates of an armored dinosaur from the Lower Jurassic (Sinemurian-Pliensbachian) Lower Kota Formation (India) are redescribed by Peter Galton, Galton (2019), who considers these fossils to be more similar to plates of ankylosaurians than basal thyreophorans, and interprets them as the earliest ankylosaurian fossils reported so far.
* Description of an assemblage of 12 partial, articulated or associated ankylosaurian skeletons and thousands of isolated bones and teeth from the Cretaceous (Santonian) Iharkút vertebrate locality (Hungary) will be published by Ősi ''et al.'' (2019).
* A study on the evolution of morphological traits associated with tail weaponry in ankylosaurs and glyptodonts, aiming to quantitatively test the hypothesis that tail weaponry of these groups is an example of convergent evolution, is published online by Victoria Arbour, Arbour & Zanno (2019).
* Murray, Riguetti & Rozadilla (2019) describe ankylosaur osteoderms from the Upper Cretaceous (Campanian-Maastrichtian) Allen Formation (Argentina).
* Description of three new skull specimens of ''Talarurus plicatospineus'' from the Upper Cretaceous (Cenomanian–Santonian) Bayan Shireh Formation (Mongolia), and a study on the phylogenetic relationships of this species, is published online by Park ''et al.'' (2019).
* Evidence for sexual dimorphism in ''Tianzhenosaurus youngi'' is presented by Ma (2019).
* A study on the brain morphology and topography of cranial nerves of ''Bissektipelta archibaldi'' is published by Alifanov & Saveliev (2019).
* A study on the bone histology of the holotype specimen of ''Antarctopelta oliveroi'' and on its implication for the knowledge of paleobiology of this species is published by Cerda ''et al.'' (2019).

Cerapod research

* A study on the age of the Kulinda locality (south-eastern Siberia, Russia) which yielded fossils of ''Kulindadromeus zabaikalicus'' is published by Cincotta ''et al.'' (2019).
* First Photogrammetry, photogrammetric models of the type locality burrow of ''Oryctodromeus cubicularis'' are presented by Wilson & Varricchio (2019).
* A study on the taphonomy of fossils of ''Oryctodromeus cubicularis'' is published by Krumenacker ''et al.'' (2019), who also report discovery of new burrows of this dinosaur.
* New fossil material of ornithopod dinosaurs is described from the Cretaceous Flat Rocks locality (Wonthaggi Formation, Australia) by Herne ''et al.'' (2019), who also revise ''Qantassaurus intrepidus'' and study the phylogenetic relationships of the Victoria (Australia), Victorian ornithopods.
* Two minuscule ornithopod Femur, femora, likely belonging to individuals around the point of hatching, are described from the Cenomanian Griman Creek Formation (Australia) by Kitchener ''et al.'' (2019).
* Description of new fossil material of large ornithopod dinosaurs from the Lower Cretaceous localities in El Castellar (Maestrazgo Basin, Teruel, Spain), and a study on the implications of these fossils for the knowledge of ornithopod diversity in the Lower Cretaceous of the Iberian Peninsula, is published by Verdú ''et al.'' (2019).
* Description of the anatomy of the skeleton of ''Talenkauen santacrucensis'' is published by Rozadilla, Agnolín & Novas (2019).
* A study on the anatomy of the skeleton of ''Macrogryphosaurus gondwanicus'' is published online by Rozadilla, Cruzado-Caballero & Jorge O. Calvo, Calvo (2019).
* Skeletal pathologies affecting a subadult specimen of ''Tenontosaurus tilletti'' from the Antlers Formation of southeastern Oklahoma are described by Hunt ''et al.'' (2019).
* A study on the anatomy and phylogenetic relationships of the ornithopod dinosaurs from the Maastrichtian of Crimea, including ''Riabininohadros weberae'', is published by Averianov & Lopatin (2019).
* Redescription of the fossil material of ''Orthomerus dolloi'' and a study on the phylogenetic affinities of this taxon is published online by Madzia, Jagt & Mulder (2019).
* A study on patterns and processes of morphological evolution of Hadrosauroidea, hadrosauroid dinosaurs is published by Stubbs ''et al.'' (2019).
* A study on the nature of the Fluvial processes, fluvial systems of Laramidia during the Late Cretaceous, as indicated by data from vertebrate and invertebrate fossils from the Kaiparowits Formation of southern Utah, and on the behavior of hadrosaurid dinosaurs over these landscapes, will be published by Crystal ''et al.'' (2019).
* Evidence of three-dimensional preservation of eumelanin-bearing bodies, dermal cells and blood vessel fragments in a hadrosaur specimen Peabody Museum of Natural History, YPMPU 016969 is presented by Fabbri ''et al.'' (2019).
* A study on the osteology and phylogenetic relationships of ''"Tanius laiyangensis"'' is published online by Zhang ''et al.'' (2019).
* A study on the bone histology of tibiae of ''Maiasaura peeblesorum'', focusing on the composition, frequency and cortical extent of localized vascular changes, is published by Woodward (2019).
* A study on hadrosaurine skulls from the Dinosaur Park Formation (Alberta, Canada), aiming to assess the influence of ontogeny on skull morphology, and evaluating proposed synonymy between ''Gryposaurus incurvimanus'' and ''G. notabilis'', is published online by Lowi-Merri & Evans (2019).
* Three juvenile specimens of ''Prosaurolophus maximus'', providing new information on the ontogeny of this taxon, are described from the Bearpaw Formation (Alberta, Canada) by Drysdale ''et al.'' (2019).
* A study on the structure and contents of a large piece of amber attached to a jaw of a specimen of ''Prosaurolophus maximus'' from the Cretaceous Dinosaur Park Formation (Alberta, Canada), evaluating the implications of this finding for the knowledge of the habitat and taphonomy of the dinosaur, is published by McKellar ''et al.'' (2019).
* A study on the impact of bone tissue structure, early Diagenesis, diagenetic regimes and other Taphonomy, taphonomic variables on the preservation potential of soft tissues in vertebrate fossils, as indicated by data from fossils of ''Edmontosaurus annectens'' from the Standing Rock Hadrosaur Site (Maastrichtian Hell Creek Formation, South Dakota), is published by Ullmann, Pandya & Nellermoe (2019), who report the first recovery of osteocytes and vessels from a fossil vertebral centrum and ossified tendons.
* A femur of an early juvenile hadrosaurid, probably belonging to the species ''Edmontosaurus annectens'', is described from the Hell Creek Formation (Montana, United States) by Farke & Yip (2019), providing new information on Ontogeny, ontogenetic changes in the skeleton of this dinosaur.
* Skull remains of nestling-sized hadrosaurids, probably belonging to the species ''Edmontosaurus annectens'', are described from the Hell Creek Formation (Montana, United States) by Wosik, Goodwin & Evans (2019).
* A study of three-dimensionally preserved squamous skin of a member of the genus ''Edmontosaurus'' from the Upper Cretaceous (Campanian) Wapiti Formation (Alberta, Canada) is published by Barbi ''et al.'' (2019).
* The first definitive Lambeosaurinae, lambeosaurine fossil (an isolated skull bone) is described from the Liscomb Bonebed of the Prince Creek Formation (Alaska, United States) by Takasaki ''et al.'' (2019).
* Fossils of a lambeosaurine related to the Eurasian Tsintaosaurini are described from the lower Maastrichtian of the Els Nerets locality (eastern Tremp Syncline, northeastern Spain) by Conti ''et al.'' (2019).
* A study on the microwear of hadrosaur teeth from the La Parrita locality (Cerro del Pueblo Formation, Mexico) and on its implications for the knowledge of jaw mechanics and feeding ecology of these hadrosaurs is published by Rivera-Sylva ''et al.'' (2019).
* A study on bone histology of ''Psittacosaurus lujiatunensis'' through its ontogeny is published by Zhao ''et al.'' (2019).
* A study on the morphological changes in the braincase of ''Psittacosaurus lujiatunensis'' through its ontogeny, based on data from three specimens from the Lower Cretaceous Yixian Formation (China), is published by Bullar ''et al.'' (2019).
* A three-dimensional virtual endocast of a member of the genus ''Auroraceratops'' is reconstructed on the basis of a well-preserved skull by Zhang ''et al.'' (2019).
* Studies on the preservation of fossils of ''Auroraceratops rugosus'', on their stratigraphic provenance, and on the anatomy and phylogenetic relationships of this species are published by Suarez ''et al.'' (2019), Suarez ''et al.'' (2019), Morschhauser ''et al.'' (2019), Li ''et al.'' (2019), Morschhauser ''et al.'' (2019) and Morschhauser ''et al.'' (2019).
* A study on the nature of the observed variation in morphology and size of skulls of ''Bagaceratops rozhdestvenskyi'' is published online by Czepiński (2019), who considers the species ''Gobiceratops minutus'', ''Lamaceratops tereschenkoi'', ''Platyceratops tatarinovi'' and ''Magnirostris dodsoni'' to be Synonym (taxonomy), junior synonyms of ''B. rozhdestvenskyi''.
* The first postcranial skeleton of ''Bagaceratops'' reported so far is described from the Upper Cretaceous Barun Goyot Formation (Mongolia) by Kim, Yun & Lee (2019).
* A study on the anatomy of the appendicular skeleton of ''Protoceratops andrewsi'' and on its implications for the knowledge of the locomotor abilities of this species throughout its ontogeny is published by Słowiak, Tereshchenko & Fostowicz-Frelik (2019).
* A study on the bone histology and skeletal growth of ''Avaceratops'' and ''Yehuecauhceratops'' is published online by Hedrick ''et al.'' (2019).
* New information on the anatomy of the skeleton of ''Pachyrhinosaurus perotorum'' is presented by Tykoski, Anthony Fiorillo, Fiorillo & Chiba (2019), who also provide a new diagnosis of this species.
* A study on the morphological variation of the skulls of specimens of ''Styracosaurus albertensis'' is published online by Holmes ''et al.'' (2019).
* A study on the affinities of two Chasmosaurinae, chasmosaurine skulls from the Dinosaur Park Formation (Alberta, Canada), previously referred to the species ''Chasmosaurus belli'', is published by Campbell ''et al.'' (2019), who transfer the species ''Vagaceratops irvinensis'' to the genus ''Chasmosaurus'', and consider the two studied skulls to be fossils of members of the genus ''Chasmosaurus'' of uncertain specific assignment, with morphology intermediate between ''C. belli'' and ''C. irvinensis''.
* A study on the taphonomy of hadrosaurid and ceratopsid fossils from the Scabby Butte locality (St. Mary River Formation; Alberta, Canada) is published online by Campbell, Ryan & Anderson (2019).
*A study on the taxonomic status of ''Teyuwasu barberenai'', in which it was proposed as a second specimen of the Herrerasauridae, herrerasaurid ''Staurikosaurus pricei'' rather than a separate genus and species, is published by Garcia, Müller & Dias-da-Silva (2019).
*A study on a putative sauropodomorph ilium, from Carnian rocks of the Candelária Sequence/Santa Maria Formation (Brazil), aims to discuss muscle attachment scars, in the context of ontogeny and phylogeny of basal Dinosauriformes, dinosauriforms, focusing in Saturnaliinae, saturnaliine sauropodomorphs is published by Garcia ''et al.'' (2019).

Birds

New bird taxa

Avialan research

* A study on early bird evolution, aiming to determine their divergence times and evolutionary rates, is published by Zhang & Wang (2019).
* A study on the impact of varying oxygen concentrations, global temperatures and air densities on the flight performance of extinct birds and on major diversification events which took place during the evolution of birds is published by Serrano ''et al.'' (2019).
* A study aiming to determine whether there is a relationship between the volume of Lacuna (histology), lacunae of osteocytes derived from static osteogenesis and biological parameters such as genome size, body mass, growth rate, metabolic rate or red blood cell size in extant birds is published by Grunmeier & D'Emic (2019), who evaluate the implications of their finding for inferring Physiology, physiological paraments in extinct birds, and potentially other vertebrates, on the basis of osteocyte lacunar volumes.
* A study on the expression patterns of the anterior genes ''GLI3, Gli₃'' and ''ALX4, Alx₄'' in limb buds of emu, chicken and zebra finch embryos, and on their implications for the knowledge of evolution of the Origin of birds#Digit homology, avian digital pattern, is published by Kawahata ''et al.'' (2019).
* A study on the diversity of regulatory gene expression profiles of amniote Digit (anatomy), digits, evaluating its implications for the knowledge of the origin of the avian digital pattern, is published by Stewart ''et al.'' (2019).
* A study on the total mass of the dentition of Mesozoic birds, and on the impact of the reduction and loss of teeth on total body mass of Mesozoic birds, is published by Zhou, Sullivan & Zhang (2019).
* A review of the available evidence of the diet of Mesozoic birds, especially those known from the Lower Cretaceous Jehol Lagerstätte (China), is published by O'Connor (2019).
* A study on the early evolution of the digestive system of birds, as indicated by data from Paraves, paravians from the Jurassic Yanliao Biota and the Cretaceous Jehol Biota (China), is published online by O'Connor & Zhou (2019).
* A study on the early evolution of the diel activity patterns in diapsid lineages, focusing on the common ancestor branch of living birds, is published by Yu & Wang (2019).
* A study on the diversity of melanosome morphology in Iridescence, iridescent feathers of extant birds, and on its implications for inferring iridescence in fossil feathers in general and in Eocene birds cf. ''Primotrogon'' and ''Scaniacypselus'' in particular, is published by Nordén ''et al.'' (2019).
* A study on the morphology of melanosomes from feathers of extant birds that express non-iridescent structural colour, and on its implications for the possibility of detection of these melanosomes in the fossil record in general and in Crown group#Stem groups, stem group Coraciidae, roller ''Eocoracias'' in particular, is published by Babarović ''et al.'' (2019).
* Amino acids are detected in two specimens of fossil feathers from the Cretaceous amber from Myanmar and Eocene Baltic amber by McCoy ''et al.'' (2019).
* Description of new amber specimens preserving feathers from the Cretaceous of Myanmar, evaluating the implications of these feathers for the knowledge of the development of the rachis-dominated feathers of Mesozoic birds, is published by Carroll, Luis M. Chiappe, Chiappe & Bottjer (2019).
* A study on ''Praeornis sharovi'' from the Late Jurassic of Kazakhstan is published by Agnolin, Rozadilla & Carvalho (2019), who interpret the fossil as a tail feather of a basal bird.
* A geochemical halo of the calamus of the holotype feather of ''Archaeopteryx lithographica'', detected using Laser-induced fluorescence, Laser-Stimulated Fluorescence, is reported by Kaye ''et al.'' (2019), who also assess the implications of their findings for the identification of this feather; the study is subsequently criticized by Carney, Tischlinger & Shawkey (2020).
* A study on the postcranial skeleton of the Specimens of Archaeopteryx#The Berlin specimen, Berlin specimen of ''Archaeopteryx lithographica'', reporting pneumatic structures visible under ultraviolet light and confirming that numerous postcranial bones of ''Archaeopteryx'' were reduced in mass via hollow interiors, is published by Schwarz ''et al.'' (2019).
* A comparative study of all named taxa referred to Confuciusornithiformes, taxonomic revision of the group and a study on the phylogenetic relationships of members of the group is published by Wang, O'Connor & Zhou (2019).
* Evidence of beak preservation in a referred specimen of ''Confuciusornis sanctus'' (originally the holotype of ''Jinzhouornis zhangjiyingia'') is presented by Falk ''et al.'' (2019).
* A study on bone histology of ''Confuciusornis sanctus'', and on its implications for the knowledge of the life history of this species, is published online by Anusuya Chinsamy-Turan, Chinsamy ''et al.'' (2019).
* Fully fledged feathering is reported in a hatchling Enantiornithes, enantiornithine specimen from the Early Cretaceous Las Hoyas locality in Spain (first described by Knoll ''et al.'', 2018) by Kate ''et al.'' (2019).
* A remarkably well-preserved foot of an enantiornithine bird, accompanied by part of the wing plumage, is described from the Cretaceous amber from Myanmar by Xing ''et al.'' (2019).
* A foot of a bird (likely a member of Enantiornithes; made the holotype of the species ''Fortipesavis prehendens'' in a later publication), revealing a morphology previously unrecognized in Mesozoic birds, and a range of feathers representing multiple morphotypes are reported for the Cretaceous amber from Myanmar by Xing ''et al.'' (2019).
* O'Connor ''et al.'' (2019) describe the integument preserved in four juvenile enantiornithine specimens from the Early Cretaceous Jehol Biota, interpreted by the authors as mid to late immature feathers.
* Description of two new specimens of ''Protopteryx fengningensis'' from the Lower Cretaceous Huajiying Formation (China), preserving most of the skeleton and plumage, and providing new information on the anatomy and flight performance of members of this species, is published online by Luis M. Chiappe, Chiappe ''et al.'' (2019).
* A study on the bone microstructure of ''Yanornis'', and on its implications for the knowledge of the growth strategy of this bird, is published online by Wang ''et al.'' (2019).
* A study on the evolution and function of avian predentary found in Mesozoic Ornithuromorpha, ornithuromorphs, based on data from a specimen of ''Yanornis martini'', is published by Bailleul ''et al.'' (2019).
* A study comparing the hindlimb morphology of Hesperornithiformes, hesperornithiforms and modern foot-propelled diving birds is published by Bell, Wu & Luis M. Chiappe, Chiappe (2019).
* A study on the paleobiogeography of hesperornithiforms, evaluating its implications for the knowledge of the paleoecology of the Late Cretaceous Western Interior Seaway, is published by Wilson (2019).
* A large bird femur referred to the species ''Gargantuavis philoinos'', providing new information on the anatomy of this species, is described from the Maastrichtian of southern France by Buffetaut & Angst (2019), who name a new family Gargantuaviidae.
* Description of a well-preserved pelvis of ''Gargantuavis'' from the Maastrichtian Sânpetru Formation (Romania), preserving characteristics previously unknown in ''Gargantuavis'' and constituting the first record of this genus outside the area of the Late Cretaceous Ibero-Armorican Island, is published online by Gerald Mayr, Mayr ''et al.'' (2019), who evaluate the implications of this finding for the knowledge of the phylogenetic relationships of ''Gargantuavis''; the study is subsequently criticized by Éric Buffetaut, Buffetaut & Angst (2020).
* A study on the evolution of body size of Palaeognathae, palaeognath birds is published by Crouch & Julia Clarke, Clarke (2019).
* A study on the hindlimb anatomy and phylogenetic relationships of ''Palaeotis weigelti'' is published by Gerald Mayr, Mayr (2019).
* A study on wing anatomy, body mass, wing surface area, wing span and probable flight parameters of ''Calciavis grandei'' is published online by Torres, Mark Norell, Norell & Clarke (2019).
* A study on changes of ostrich eggshell bead diameter throughout the Holocene, testing the proposed relationship between changes of ostrich eggshell bead diameter and the spread of herding in Africa, is published by Miller & Sawchuk (2019).
* A study on the taxonomic identification of Rhea (bird), rhea bones from four archaeological sites in the Mendoza Province (Argentina), based on genetic data, is published by Abbona ''et al.'' (2019).
* A study aiming to evaluate whether Invasive species in New Zealand, introduced deer and hares fill the same ecological niches as extinct moa birds in New Zealand, as indicated by data from pollen extracted from moa coprolites and mammal feces, is published by Wood & Wilmshurst (2019).
* A study on the anatomy of the Bone#Cancellous bone, cancellous bone in the femur, tibiotarsus and fibula of three moa species is published by Bishop, Scofield & Hocknull (2019).
* A study on population densities and on the relationship between body mass and population densities in moa birds is published online by Latham ''et al.'' (2019).
* A femur of a very large specimen of ''Struthio dmanisensis, "Struthio" dmanisensis'' is described from the Early Pleistocene of the Crimean Peninsula by Zelenkov ''et al.'' (2019), who transfer this species to the genus ''Pachystruthio'' and estimate body mass of this species.
* A study on the microstructure of the bones of ''Vegavis iaai'' is published by Garcia Marsà, Agnolín & Novas (2019).
* Eggshells and a small ovoid-shaped egg of Neognathae, neognathous birds, probably members of the family Presbyornithidae, as well as a carpometacarpus of a presbyornithid are described from the Eocene of the Glib Zegdou Formation (Algeria) by Garcia ''et al.'' (2019).
* A study on the putative Cariamiformes, cariamiform femur from the Maastrichtian Sandwich Bluff Member of the Lopez de Bertodano Formation (Vega Island, Antarctica) reported by Case ''et al.'' (2006) is published by West ''et al.'' (2019), who reinterpret this specimen as a fossil of an unnamed large-bodied member of the genus ''Vegavis''.
* A study on the holotype specimen and other fossils attributed to the species ''Cayaoa bruneti'' is published by De Mendoza & Tambussi (2019), who present a revised diagnosis of this species.
* A study on the phylogenetic relationships of ''Cayaoa bruneti'' is published by De Mendoza (2019).
* A study on the Cenozoic fossil record of Anatidae, anatids from Eurasia is published by Zelenkov (2019).
* A study on the morphology of the postcranial skeleton of the Oligocene-Miocene Galliformes, galliform ''Palaeortyx'', and on the phylogenetic relationships of this taxon, is published by Zelenkov (2019).
* A study on the phylogenetic relationships of extant and fossil members of Strisores is published by Chen ''et al.'' (2019).
* Description of new fossil material of ''Pellornis mikkelseni'', providing new information on the anatomy of this species, and a study on the phylogenetic relationships of this species is published by Musser, Ksepka & Field (2019).
* A study on the phylogenetic relationships of the adzebills, as indicated by data from near-complete mitochondrial genome sequences, is published by Boast ''et al.'' (2019).
* A study on the phylogenetic relationships of the adzebills, as indicated by morphological and molecular data, is published by Musser & Joel Cracraft, Cracraft (2019).
* A study on two Humerus, humeri of Rail (bird), rails belonging to the genus ''Dryolimnas'' from the Pleistocene of the Picard Island (Seychelles) is published by Hume & Martill (2019), who interpret these humeri as bones of a flightless rail, and consider them to be evidence of repeated evolution flightlessness in members of the genus ''Dryolimnas'' inhabiting the Aldabra Atoll – before the atoll was completely submerged in the late Pleistocene, as well as after it emerged from the ocean again.
* A study on the phylogenetic relationships and evolutionary history of living and extinct flightless lineages of the white-throated rail from the Aldabra Group is published by van de Crommenacker ''et al.'' (2019).
* A revision of extinct endemic rails of the Mascarene Islands and a study on their ecology and extinction chronologies is published by Hume (2019).
* A study on the taxonomic status of the Canary Islands oystercatcher (''Haematopus meadewaldoi'') is published online by Senfeld ''et al.'' (2019).
* A study on the fossil material attributed to the species ''Becassius charadriioides'' is published online by De Pietri, Gerald Mayr, Mayr & Scofield (2019), who assign this species to the family Glareolidae.
* A nearly complete tarsometatarsus of the least seedsnipe (''Thinocorus rumicivorus'') is described from the Ensenadan of Argentina by Picasso, De Mendoza & Gelfo (2019).
* A study aiming to determine the drivers of the extinction of the great auk, based on data from mitochondrial genome sequences from across its geographic range, is published by Thomas ''et al.'' (2019).
* Pedal phalanx of a penguin affected by osteomyelitis is described from the Eocene of West Antarctica by Jadwiszczak & Rothschild (2019).
* A set of skeletal elements of a penguin attributable to the species ''Delphinornis larseni'', providing new information on the anatomy of this species, is described from the Eocene Submeseta Formation (Seymour Island, Antarctica) by Jadwiszczak & Mörs (2019).
* The first skull reliably assigned to ''Anthropornis grandis'' is described from the Eocene (Bartonian) Submeseta Formation (Seymour Island, Antarctica) by Acosta Hospitaleche ''et al.'' (2019).
* A study on the holotype specimen of ''Tereingaornis moisleyi'', evaluating the taxonomic validity of this species, is published online by Thomas ''et al.'' (2019).
* A fossil humerus of the Magellanic penguin or a relative of this species is described from Uruguay by Acosta Hospitaleche ''et al.'' (2019), representing the first fossil of a penguin from Uruguay reported so far.
* A study on changes in the population size of the Adélie penguin colonies and relative krill abundance in the Prydz Bay (Antarctica) during the 2nd millennium, as indicated by data from ornithogenic sediment cores from the Vestfold Hills, will be published by Gao ''et al.'' (2019).
* A vertebra of a stork similar to the maguari stork is described from the late Pleistocene of the Santa Vitória Formation (Rio Grande do Sul, Brazil) by Lopes, Pereira & Ferigolo (2019), who evaluate the implications of this finding for reconstructions of local paleoenvironment.
* Restudy of a putative bill of an ibis-like bird from the Eocene La Meseta Formation (Antarctica) described by Jadwiszczak, Gaździcki & Tatur (2008) is published by Agnolin, Bogan & Rozadilla (2019), who consider this specimen to be more likely to be a dorsal spine of a Chimaera, chimaeroid Chondrichthyes, cartilaginous fish.
* A study on the body mass evolution in the clade Telluraves, incorporating data from 76 extinct species, is published by Crouch & Mason-Gamer (2019).
* A study on the demographic history of the Andean condors in southern South America and on the causes of their survival of late Quaternary megafauna extinctions is published by Perrig ''et al.'' (2019).
* Hindlimb bones of an extinct eagle of uncertain phylogenetic placement are described from the late Quaternary of Hispaniola by David Steadman, Steadman, Milan & Mychajliw (2019).
* A study on the origin and evolution of the Haast's eagle and the Eyles's harrier, as indicated by complete mitochondrial genome data, is published by Knapp ''et al.'' (2019).
* Evidence from Neanderthal-associated sites in Europe indicating that Neanderthals practiced catching the golden eagles is presented by Finlayson ''et al.'' (2019).
* Evidence of Châtelperronian Neanderthals using Pes (anatomy), pedal Phalanx bone, phalanges of imperial eagles for symbolic practices is reported from the Cova Foradà site (Spain) by Rodríguez-Hidalgo ''et al.'' (2019).
* A study on the impact of the climate changes of the last 35,000 years on the long-eared owls and burrowing owls, as indicated by data from fossils from the La Brea Tar Pits, is published by Madan, Donald Prothero, Prothero & Syverson (2019).
* A study on the geographical origin and evolutionary history of Coraciiformes, based on data from extant taxa and from fossils, is published by McCullough ''et al.'' (2019).
* New skull remains of ''Phorusrhacos longissimus'' are described from the Cerro de los fósiles site in the Miocene Santa Cruz Formation (Argentina) by Degrange ''et al.'' (2019).
* A study on the phylogenetic relationships of the Bahaman caracara, based on data from a nearly complete mitochondrial genome recovered from a bone of a member of this species, is published by Oswald ''et al.'' (2019).
* A study on the holotype specimen of ''Calcardea junnei'' is published by Gerald Mayr, Mayr, Philip D. Gingerich, Gingerich & Smith (2019), who reject the interpretation of this species as a heron, and claim that this bird resembled parrot-like taxon ''Vastanavis'' from the early Eocene of India.
* A study on the identity of a parakeet specimen held at National Museums Scotland, interpreted as most likely originating from Mauritius by Cheke & Jansen (2016), is published by Jones ''et al.'' (2019), who consider this parakeet to be the only known skin specimen of extinct Echo parakeet, Réunion parakeet.
* Complete genomic sequence of a specimen of the Carolina parakeet is generated by Gelabert ''et al.'' (2019), who evaluate the implications of their findings for the knowledge of the phylogenetic relationships of this species, its demographic history and adaptation to a toxic diet.
* A study on the phylogenetic relationships, biogeography and diversification rates of passerine birds throughout their evolutionary history, aiming to evaluate the impact of major events in Earth history on the evolution of passerines, is published by Oliveros ''et al.'' (2019).
* Dussex ''et al.'' (2019) sequence whole genomes of the huia and the South Island kōkako, South Island kokako, and evaluate whether the loss of genomic diversity played a role in their extinction.
* A review of Cretaceous and Paleogene bird fossils from the James Ross Basin (Antarctica) is published by Acosta Hospitaleche ''et al.'' (2019).
* A study on drivers of bird distribution shifts throughout the Cenozoic is published by Saupe ''et al.'' (2019).
* A review of the bird fossil assemblage from the Paleocene locality of Menat, Puy-de-Dôme, Menat (Puy-de-Dôme, France), including a new fossil specimen with exceptional soft tissue preservation, is published by Gerald Mayr, Mayr, Hervet & Buffetaut (2019).
* New bird fossils, including the oldest European record of the Gastornithidae which is temporally well-constrained, are described from the Paleocene localities from the North Sea Basin in Belgium (Maret) and France (Templeuve and Rivecourt-Petit Pâtis) by Mayr & Smith (2019).
* A revision of bird fossils from the Eocene (Ypresian) fossil sites of the North American Okanagan Highlands, mainly in British Columbia (Canada), is published by Mayr ''et al.'' (2019), who report, among other findings, a skeleton of a possible member of the family Songziidae, and fossil wings which might constitute the earliest known record of Gaviiformes.
* An assemblage of 54 bird bones from early Eocene marine sediments of the Ampe quarry near Egem in Belgium is described by Mayr & Smith (2019).
* New Eocene bird fossils, including remains of members of Crown group#Pan-group, Pan-Charadriiformes, a member of Pan-Mirandornithes and a member or a relative of the family Quercymegapodiidae, are described from the Bumban Member of the Naranbulag Formation (Mongolia) by Hood ''et al.'' (2019).
* Flamingo-like and Anatidae, anatid-like fossil bird footprints are described from the Vinchina Formation (Argentina) by Farina ''et al.'' (2019), who name new ichnotaxa ''Phoenicopterichnum lucioi'' and ''P. vinchinaensis''.
* A study on the date of extinction of the Tristan moorhen, the Inaccessible Island finch and the Tristan albatross on the main island of the Tristan da Cunha archipelago, aiming to place these extinctions in the context of the changing island ecosystems of the nineteenth and early twentieth centuries, is published by Bond, Carlson & Burgio (2019).
* Description of a fossil bird assemblage from the early Pliocene of the Na Burguesa-1 site (Mallorca, Spain) is published by Torres-Roig ''et al.'' (2019).
* A study on the impact of Plio-Pleistocene environmental changes on the bird fauna of New Zealand is published by Rawlence ''et al.'' (2019).
* Description of Late Pleistocene and Holocene bird remains from Jerimalai (cave), Jerimalai and Matja Kuru 1 sites in East Timor will be published by Meijer, Louys & O'Connor (2019).
* Description of bird remains from the Castelcivita Caves, Grotta di Castelcivita site (Italy) and a study on their implications for the knowledge of local environment and human-bird interactions in the Paleolithic is published by Fiore ''et al.'' (2019).
* Description of bird remains from the Qesem cave (Israel) dated to between 420 and 200 Year#SI prefix multipliers, ka, and a study on their implications for the knowledge of interactions of birds and humans occupying the site, is published by Blasco ''et al.'' (2019).
* A study on the phylogenetic relationships of the dodo and the great auk, as indicated by data from proteins extracted from bone material, is published by Horn ''et al.'' (2019).
* A study on bone surface modifications of Pleistocene bird fossils from Mata Menge site (Flores, Indonesia) is published by Meijer ''et al.'' (2019), who report no unambiguous evidence for exploitation of birds from Mata Menge by early hominins.
* A study on the impact of human colonization of New Zealand on the diversity dynamics of New Zealand bird fauna is published by Valente, Etienne & Garcia-R (2019).

Pterosaurs

New pterosaur taxa

Pterosaur research

* A study on the evolution of vertebral Skeletal pneumaticity, pneumaticity in pterosaurs is published by Buchmann & Rodrigues (2019).
* A study on the development of pterosaur embryos is published by Unwin & Deeming (2019).
* A study on three pterosaur coprolites from the Upper Jurassic of Poland, probably produced by Ctenochasmatidae, ctenochasmatids, and on the probable diet of their producers is published by Qvarnström ''et al.'' (2019).
* Pterosaur#Pycnofibers, Pycnofibers showing diagnostic features of feathers are reported in two specimens of Anurognathidae, anurognathid pterosaurs (probably belonging either to the genus ''Jeholopterus'' or ''Dendrorhynchoides'') from the Jurassic of China by Yang ''et al.'' (2019); the study is subsequently criticized by Unwin & Martill (2020).
* Redescription of the holotype specimen of ''Mythunga camara'' is published by Pentland & Poropat (2019).
* Partial left Metacarpal bones, metacarpal of a large Ornithocheiridae, ornithocheirid pterosaur is described from the Lower Cretaceous (Barremian) Wessex Formation (United Kingdom) by Martill & Coram (2019).
* New specimen of ''Sinopterus atavismus'' (a nearly complete skeleton) is described from the Lower Cretaceous (Aptian) Jiufotang Formation (China) by Zhang ''et al.'' (2019).
* A study on intervertebral foramina in ''Vectidraco'', ''Anhanguera (pterosaur), Anhanguera'' and ''Coloborhynchus'', and on their implications for inferring palaeoecology and locomotion of these pterosaurs, is published by Martin-Silverstone, Sykes & Darren Naish, Naish (2019).
* The first pterosaur postcranial bone (a left ulna) from the Albian Lohan Cura Formation (Argentina) is described by Bellardini & Codorniú (2019).
* A study on the melanin content of the soft tissue headcrest of a specimen of ''Tupandactylus imperator'' is published by Pinheiro ''et al.'' (2019).
* Alexander Kellner, Kellner ''et al.'' (2019) describe fossils of Pterodactyloidea, pterodactyloid pterosaurs from the Upper Cretaceous Santa Marta Formation and Snow Hill Island Formation (Antarctica).

Other archosaurs

Other new archosaur taxa

Other archosaur research

* Fossils of an immature Lagerpetidae, lagerpetid, representing a new morphotype different from other known lagerpetids, and co-occurring with dinosaurs and Silesauridae, silesaurids, are described from the Candelária Sequence of the Upper Triassic Santa Maria Formation (Brazil) by Garcia ''et al.'' (2019).
* A study on the histology and gross morphology of a growth series of Femur, femora of ''Dromomeron romeri'' is published by Griffin ''et al.'' (2019).
* A study reevaluating the taxonomic validity of ''Lagosuchus talampayensis'' is published by Agnolin & Ezcurra (2019).
* A study on the microstructure of the long bones (femur and tibiae) of ''Lewisuchus admixtus'' is published by Garcia Marsà, Agnolín & Novas (2019).
* New specimen of ''Lewisuchus admixtus'' is described from the Chañares Formation (Argentina) by Ezcurra ''et al.'' (2019).
* A study on the anatomy of the skeleton of ''Asilisaurus kongwe'' is published online by Nesbitt, Langer & Ezcurra (2019).
* A study on the anatomy of the braincase of ''Silesaurus opolensis'' is published by Piechowski, Niedźwiedzki & Tałanda (2019).
* Coprolites containing beetle remains, most likely produced by ''Silesaurus opolensis'', are described from the Upper Triassic Krasiejów locality (Poland) by Qvarnström ''et al.'' (2019).
* A study on bone histology of ''Sacisaurus agudoensis'' is published by Veiga ''et al.'' (2019).
* A study on the phylogenetic relationships of ''Pisanosaurus mertii'' is published by Baron (2019), who interprets this taxon as a likely Silesauridae, silesaurid.

General research

* A study on patterns of evolutionary integration among regions of the archosaur skull, based on data from extant and fossil taxa, is published by Felice ''et al.'' (2019).
* A review of the Biogeography, biogeographic history of crocodyliforms, Sauropoda, sauropod dinosaurs, nonavian Theropoda, theropod dinosaurs and mammals from the Mesozoic of Gondwana is published by David W. Krause, Krause ''et al.'' (2019).
* A study on the biogeography of Cretaceous terrestrial tetrapods, including terrestrial crocodyliforms, non-avian dinosaurs, birds and pterosaurs, is published by Kubo (2019).
* A study on size and shape differences between brains and endocasts of extant American alligator and Chicken, domestic chicken, and on its implications for inferring whether endocasts are a reliable proxy for brain morphology in archosaurs in general, is published by Watanabe ''et al.'' (2019).
* A study comparing the mechanical properties of teeth of ''Suchomimus tenerensis'' and ''Sarcosuchus imperator'' is published by Kundanati ''et al.'' (2019).
* A study on the distribution of medullary bone in the skeletons of living birds, aiming to refine the set of criteria used to evaluate purported records of medullary bone tissue in fossil avemetatarsalians, is published by Canoville, Schweitzer & Zanno (2019).
* A study comparing the anatomy of hindlimbs of cursorial birds, non-avian theropod dinosaurs and other cursorial animals, aiming to determine whether cursorial birds are good kinematic model for reconstructions of theropod dinosaur locomotion, is published by Grossi ''et al.'' (2019).
* A study on the microstructure of eggshells in birds and non-avian maniraptoran dinosaurs is published by Choi, Han & Lee (2019).
* Hu ''et al.'' (2019) reconstruct the vomer of ''Sapeornis'' and ''Sinovenator'', and evaluate their implications for the knowledge of the evolution of the skull of Paraves, paravians.
* A study on the anatomy of skull fenestrae in Sauropsida, sauropsids, and on its implications for reconstructions of dinosaur soft tissues, is published online by Holliday ''et al.'' (2019).
* A study aiming to determine the likely karyotype of the dinosaur and the early diapsid ancestor of birds is published by Griffin, Larkin & O'Connor (2019).
* A study on the evolution of bipedality in archosaurs is published by Grinham, VanBuren & David B. Norman, Norman (2019).
* A study on the evolution of the brain of bird-line archosaurs is published by Beyrand ''et al.'' (2019).
* A review of the progress in the field of archosaur paleohistology, focusing in particular on the study of the dinosaurs, is published by Bailleul, O'Connor & Schweitzer (2019).
* A study on the phylogenetic distribution of the hyposphene-hypantrum articulation in the vertebrae of archosaurs is published by Stefanic & Nesbitt (2019).
* A study comparing growth patterns of the American alligator, chicken and ''Tenontosaurus tilletti'' is published by Brunner ''et al.'' (2019).
* A study comparing the position, size and number of Skeletal pneumaticity, pneumatic foramina in the vertebrae of pterosaurs and birds is published by Buchmann, Avilla & Rodrigues (2019).
* A study on non-avian dinosaur and bird tracks (representing some of the oldest known bird tracks) preserved in slabs used as building stones at the Chengde Mountain Resort, originating from the Tuchengzi Formation (China) and dating to the Jurassic-Cretaceous boundary, is published online by Xing ''et al.'' (2019).
* Description of non-avian dinosaur and bird tracks from the Upper Cretaceous Chignik Formation (southwestern Alaska), evaluating their implications for the knowledge of habitat preferences of northern high-latitude dinosaurs, is published by Fiorillo ''et al.'' (2019).
* An assemblage of non-avian dinosaur and bird feathers is described from the Lower Cretaceous Koonwarra, Victoria#Koonwarra fossil bed, Koonwarra Fossil Bed (Australia) by Kundrát ''et al.'' (2019).
* A study on Feather#Classification, barb angles in birds and non-avian dinosaurs, evaluating their implications for the knowledge of feather shape evolution and the utility of barb angles for determination of flight abilities of fossil taxa, is published by Wang, Tang & Julia Clarke, Clarke (2019).

References

{{portal bar, Dinosaurs, Evolutionary biology, Paleontology

2019 in paleontology
2010s in paleontology
2019 in science