2022 In Paleontology

Flora

Plants

Fungi

Newly named fungi

Mycological research

* A study on the anatomy of specimens of ''Prototaxites'' from the Heider quarry in Germany and the Bordeaux quarry in Canada is published by Vajda ''et al.'' (2022), who interpret specimens of ''Prototaxites'' as fungi and as rhizomorphs.
* Yang ''et al.'' (2022) describe new fossil material of '' Daohugouthallus ciliiferus'' from the Jurassic Jiulongshan Formation (China), providing evidence that this macrolichen inhabited a gymnosperm branch, and name a new family Daohugouthallaceae placed within the class Lecanoromycetes.

"Algae"

Floral research

* Sforna ''et al.'' (2022) report the discovery of bound nickel-tetrapyrrole moieties preserved within cells of a ~1-billion-years-old eukaryote '' Arctacellularia tetragonala'' from the BII Group of the Mbuji-Mayi Supergroup (Democratic Republic of the Congo), identify the tetrapyrrole moieties as chlorophyll derivatives, and interpret ''A. tetragonala'' as one of the earliest known multicellular algae.
* A study on the mode of preservation of macroalgae and associated filamentous microfossils from the Tonian Dolores Creek Formation (Yukon, Canada) is published by Maloney ''et al.'' (2022).
* Li ''et al.'' (2022) study the morphology and growth features of '' Gesinella'', and interpret this organism as a likely eukaryotic macroalga and a benthic metaphyte.
* Retallack (2022) argues that Late Silurian and Early Devonian nematophytes would have towered over land plants from the same fossil plant assemblages, including vascular plant trees, that nematophytes were branched and formed closed canopies, that there were extensive networks of nutrient-gathering glomeromycotan mycorrhizae in Ordovician to Devonian paleosols, and that the environment with nematophytes as the tallest elements of terrestrial vegetation and soils riddled with mycorrhizae may have nurtured, sheltered and facilitated the evolution of early land plants.

Cnidarians

Newly named cnidarians

Cnidarian research

* A study on the taphonomy and systematics of conulariid specimens from the Silurian (Telychian) Waukesha Lagerstätte (Wisconsin, United States) is published by Miller ''et al.'' (2022).
* Wang ''et al.'' (2022) describe phosphatized muscle fibers preserved in three dimensions in post-embryonic stages of olivooids from the Cambrian (Fortunian) Kuanchuanpu Formation (China) – representing the oldest occurrence of muscle tissue in cnidarians, and in animals in general, reported to date – and evaluate the implications of this finding and fossil evidence from ecdysozoans for the knowledge of the evolution of the muscle systems of early animals.
* Zhang ''et al.'' (2022) describe the first known soft tissues of '' Gangtoucunia aspera'', and interpret this taxon as a total group medusozoan.
* A study on changes in the functional diversity of tabulate coral assemblages across the Devonian and early Carboniferous, and on their implications for the knowledge of the impact of extinction events from this time period on tabulate corals, is published by Bridge ''et al.'' (2022).
* A study on the interactions between conulariid specimens, and attached epibionts from the Silurian (Telychian) Waukesha Lagerstätte (Wisconsin, United States) is published by April ''et al.'' (2022).

Arthropods

Bryozoans

New named bryozoans

Bryozoan research

* Fossils which might represent the oldest bryozoans with calcareous skeletons reported to date are described from the Cambrian Harkless Formation (Nevada, United States) by Pruss ''et al.'' (2022).
* A study on the impact of paleolatitude on the calcification of cryptostome and trepostome bryozoans through the Paleozoic is published by Reid, Wyse Jackson & Key (2022).
* A study on the diversity of bryozoans from the Ordovician (Tremadocian) Fenhsiang Formation (China) is published by Ma ''et al.'' (2022).
* A study on the diversification dynamics of cheilostome bryozoans since the Late Jurassic is published by Moharrek ''et al.'' (2022).
* A study on the phylogenetic relationships and evolutionary history of cheilostome bryozoans is published by Orr ''et al.'' (2022), who interpret their findings as indicating that named cheilostome genera and species are natural groupings, and that skeletal traits can be used to assign fossil or contemporary specimens to cheilostome species.

Brachiopods

Newly named brachiopods

Brachiopod research

* Redescription and a study on the phylogenetic affinities of '' Diandongia pista'' is published by Wang ''et al.'' (2022).
* A study on the phylogenetic relationships of the Ordovician and Silurian members of Atrypida is published by Baarli, Huang & Maroja (2022).
* A study on the phylogenetic relationships and biogeography of members of the family Nisusiidae is published by Oh ''et al.'' (2022).
* Evidence indicating that microstructure, maximum thickness and shell spiral characterization can aid taxonomic identification of gigantoproductid brachiopods is published by Mateos-Carralafuente ''et al.'' (2022).
* Description of remains of the rhynchonellid ''Erymnaria'' from the early Ypresian-aged Chruteren Member of the Euthal Formation, Switzerland, representing the first known occurrence of the genus in the Chruteren Member, is published by Sulser ''et al.'' (2022).

Molluscs

Echinoderms

Newly named echinoderms

Echinoderm research

* A study on the evolution of the anatomy and life habits of Cambrian–Ordovician echinoderms is published by Novack-Gottshall ''et al.'' (2022).
* A study on the morphology of the internal bars in '' Lagynocystis pyramidalis'' and '' Jaekelocarpus oklahomensis'', reevaluating the evidence for gill bars in stylophorans, is published by Álvarez-Armada ''et al.'' (2022).
* A study on dispersal patterns and morphological changes in sphaeronitid diploporans across the Ordovician–Silurian boundary is published by Sheffield ''et al.'' (2022).
* A study on the morphology and paleoecology of calceocrinid crinoids is published by Ausich (2022).
* A study on the phylogeny and divergence times of major lineages of sea urchins, comparing phylogenomic data with the fossil record, is published by Mongiardino Koch ''et al.'' (2022).
* Redescription of '' Cantabrigiaster fezouataensis'' is published by Blake & Hotchkiss (2022), who synonymize the genus ''Cantabrigiaster'' with the chinianasterid somasteroid genus ''Villebrunaster'', and consider the interpretations of a close phylogenetic linkage between crinoids and starfish and an edrioasteroid ancestry of starfish to be inadequately supported.

Hemichordates

Hemichordate research

* The putative alga '' Krejciella'' is reinterpreted as an acorn worm tube by Fatka & Vodička (2022).

Conodonts

New taxa

Research

* A study on the material properties of bioapatite in multiple elements in the coniform-bearing apparatus of '' Dapsilodus obliquicostatus'', representing different ontogenetic stages of development, is published by Shohel ''et al.'' (2022).
* Redescription of '' Histiodella labiosa'' and a study on the phylogenetic affinities of members of the genus ''Histiodella'' is published by Zhen, Bauer & Bergström (2022).
* A study aiming to determine whether co-occurring Silurian conodont species from the Gotland succession in Sweden occupied different trophic niches is published by Terrill ''et al.'' (2022).
* A synthesis on the conodont occurrences along northern Gondwana at the Silurian/Devonian boundary is published by Ferretti ''et al.'' (2022).
* A study on the morphological variation of elements of the apparatus of ''Icriodus alternatus'' is published by Girard ''et al.'' (2022), who interpret their findings as indicating that subspecies of this species described for the end Frasnian and early Famennian constitute end-member morphologies characterizing different growth stages.
* A study comparing conodont diversity dynamics in Northeast Laurussia and Northeast Siberia during the Tournaisian, and evaluating its implications for the knowledge of the causes of the extinction among conodonts during the middle–late Tournaisian transition, is published by Zhuravlev & Plotitsyn (2022).
* A study on the apparatus composition of ''Lochriea commutata'', and on its implications for the assignments of other Carbonifeous conodont species to the genus ''Lochriea'', is published by von Bitter, Norby & Stamm (2022).
* Evidence indicative of impact of ocean temperature changes on the morphology of conodont elements during the Devonian-Carboniferous transition and the Carnian-Norian transition is presented by Souquet ''et al.'' (2022).

Fish

Amphibians

New taxa

Research

* A study on the bone histology of '' Whatcheeria deltae'' is published by Whitney ''et al.'' (2022), who interpret their findings as indicating that juveniles of ''W. deltae'' grew rapidly and reached skeletal maturity quickly.
* A study on the anatomy of the Carboniferous temnospondyl specimen from the Joggins Fossil Cliffs of '' Dendrerpeton''.
* A study aiming to test whether the hindlimb of ''Eryops megacephalus'' may have been capable of salamander-like hindlimb configurations is published by Herbst, Manafzadeh & Hutchinson (2022).
* A study aiming to determine the body mass of ''Eryops megacephalus'' and ''Paracyclotosaurus davidi'' is published by Hart, Campione & McCurry (2022).
* Fossil material of large-bodied capitosaurs and a plagiosaurid is described from the Middle Triassic Fremouw Formation (Antarctica) by Gee & Sidor (2022), who also interpret the historic material from the Fremouw Formation attributed to Trematosauria as exhibiting features indicative of capitosaurian affinities.
* Redescription of ''Platycepsion wilkinsoni'' is published by Witzmann & Schoch (2022), who interpret this brachyopid as a true larva, demonstrating the presence of a larval stage in stereospondyls.
* New fossil material of '' Trematolestes hagdorni'', providing new information on the ontogeny and adult anatomy of this temnospondyl, is described by Schoch & Mujal (2022).
* A study on the bone compactness in the pectoral girdle of ''Metoposaurus krasiejowensis'' is published by Kalita ''et al.'' (2022), who interpret their findings as indicating that compact anterior end of the interclavicles along with the heavy skull of this metoposaurid could have acted as ballast for hydrostatic buoyancy control by shifting the center of mass anteriorly.
* A study on the tooth microstructure of ''Metoposaurus krasiejowensis'' is published by Weryński & Kędzierski (2022), who report the presence of possible predatory adaptations, as well as evidence of seasonal influence on dental histology.
* Surmik ''et al.'' (2022) describe a pathological vertebral intercentrum of ''Metoposaurus krasiejowensis'' and diagnose this specimen as affected by osteosarcoma, representing the first unambiguous record of primary malignant bone tumour in a Mesozoic non-amniote.
* Redescription of ''Parioxys ferricolus'' is published by Schoch & Sues (2022).
* A study on the histology of the dorsal blades of '' Platyhystrix rugosus'' is published by Bowler, Sumida & Huttenlocker (2022).
* A study on the phylogenetic relationships of members of Amphibamiformes is published by Schoch (2022).
* Revision of the fossil record of Caudata in the Palearctic realm and a study on the biogeographical history of the group is published by Macaluso ''et al.'' (2022).
* A study on the palates of extant and fossil salamanders is published by Jia, Li & Gao (2022), who interpret their findings as indicating that palatal morphology is a reliable proxy in ecological reconstructions for early salamanders.
* An incomplete salamander dentary, possibly representing a previously unknown genus and species of batrachosauroidid, is described from the Maastrichtian Lance Formation (Wyoming, United States) by Gardner (2022).
* Skutschas ''et al.'' (2022) describe a fragmentary trunk vertebra of a crown salamander from the Bathonian Moskvoretskaya Formation (Moscow Oblast, Russia), potentially representing the oldest record of a member of Salamandroidea reported to date.
* A study on the phylogenetic relationships of extant and extinct members of the family Ceratophryidae is published by Barcelos ''et al.'' (2022).
* Fossil material of a toad belonging or related to the genus ''Rhinella'' is described from the Serravallian Cura-Mallín Formation (Chile) by Guevara ''et al.'' (2022), representing the southernmost fossil record of Bufonidae in South America for the Miocene reported to date.
* A study on the seymouriamorph tracks from the Permian (Asselian) of the Boskovice Basin (Czech Republic), representing one of the oldest known records of seymouriamorphs worldwide, is published by Calábková, Březina & Madzia (2022), who interpret these tracks as evidence of presence of terrestrial seymouriamorphs which were much larger than the largest discosauriscid specimens known from this area, and likely evidence of a habitat shift that occurred relatively late in the ontogenetic development of discosauriscids.
* A study on the anatomy and pattern of replacement of teeth in ''Seymouria'' is published by Maho & Reisz (2022).
* Jansen & Marjanović (2022) study the microanatomy of the limb bones and axial skeleton of ''Batropetes palatinus'', infer a terrestrial lifestyle for the taxon that involved digging but not outright burrowing, and argue that the presence of strengthened forelimbs in ''Triadobatrachus'' in spite of its lack of the ability to jump might have been a former adaptation to forelimb-based digging that made jumping of later anurans possible by exaptation.

Reptiles

Synapsids

General research

* A study on the morphological diversity of synapsid skulls is published by Marugán-Lobón, Gómez-Recio & Nebreda (2022).

Non-mammalian synapsids

New taxa

Research

* An overview of the evolution of the brain, sensory organs and behaviour in non-mammalian synapsids is published by Benoit ''et al.'' (2022).
* A study on the anatomy of the skull of ''Cotylorhynchus romeri'' is published by Reisz, Scott & Modesto (2022).
* Evidence of serrations on the tooth crowns (possibly reflecting hypercarnivory), as well as rapid rates of development and reduced longevity of the functional teeth in ''Mesenosaurus efremovi'' from the Richards Spur locality (Oklahoma, United States) is presented by Maho ''et al.'' (2022).
* A study on the functional loading regime of the fore- and hindlimb skeleton and the body stem of therapsids, and on its implications for the knowledge of the shift from sprawling to parasagittal locomotion in therapsids, is published by Preuschoft, Krahl & Werneburg (2022).
* Fossil material of ''Dicynodon angielczyki'' is described from the Metangula Graben (Mozambique) and Luangwa Basin (Zambia) by Kammerer ''et al.'' (2022), representing the first specimens referable to this species found outside the Ruhuhu Basin (Tanzania).
* A study on the anatomy of the basicranial axis of emydopoid dicynodonts is published by Macungo ''et al.'' (2022), who provide evidence for fossorial adaptations of the basicranium in the studied taxa, and interpret these adaptations as supporting a head-lift digging behaviour for at least some cistecephalids.
* A study aiming to determine whether the fossil material of ''Lystrosaurus'' from Antarctica, South Africa, India and China conforms to Bergmann's rule is published by Kulik & Sidor (2022).
* New material of the dicynodonts ''Shaanbeikannemeyeria'' and ''Parakannemeyeria'', providing a re-description of the morphology and taxonomy of the former taxon, is described from the Middle Triassic Ermaying Formation (Ordos Basin, Shaanxi, China) by Jun Liu (2022).
* Description of the anatomy of the mandible of ''Dinodontosaurus brevirostris'', based on data from new specimens from the Chañares Formation (Argentina), and a study reevaluating the phylogenetic affinities of this species with the inclusion of the mandibular data is published by Escobar ''et al.'' (2022).
* Sidor (2022) describes articulated pedes of a small gorgonopsian from the upper Permian upper Madumabisa Mudstone Formation (Zambia).
* A gorgonopsian specimen is described from the Wutonggou Formation (Turpan Basin, Xinjiang, China) by Liu & Yang (2022), who interpret this specimen as indicating that gorgonopsians survived in northern warm temperate zone about ~253.3 million years ago, contemporaneous with the latest records from Russia and South Africa.
* Presence of mammal-like sternum is reported in a specimen of ''Gorgonops torvus'' from the Wuchiapingian of South Africa by Bendel ''et al.'' (2022), representing the earliest record of such sternum in a synapsid reported to date.
* A study on the pattern of tooth replacement in '' Cynosaurus suppostus'', based on data from five specimens inferred to represent an ontogenetic growth series, is published by Norton ''et al.'' (2022).
* A study on the bone histology of '' Massetognathus pascuali'' and ''Probainognathus jenseni'', providing evidence of uninterrupted growth pattern in ''Massetognathus'' and cyclical growth in ''Probainognathus'', is published by Garcia Marsà, Agnolín & Novas (2022).
* A study aiming to determine the body mass of ''Andescynodon mendozensis'', ''Pascualgnathus polanskii'', ''Massetognathus pascuali'', ''Cynognathus crateronotus'' and ''Exaeretodon argentinus'' on the basis of linear measurements and circumferences of postcranial elements of specimens from Triassic units of the Ischigualasto-Villa Union Basin (Argentina) is published by Filippini, Abdala & Cassini (2022).
* New fossil material of ''Santacruzodon hopsoni'' and ''Chiniquodon'' sp., providing new information on the anatomy of the former taxon, is described from the Upper Triassic ''Santacruzodon'' Assemblage Zone (Santa Cruz Sequence, Santa Maria Supersequence, Brazil) by Melo, Martinelli & Soares (2022).
* A study on the cranial ontogeny of ''Exaeretodon argentinus'' is published by Wynd, Abdala & Nesbitt (2022), who interpret their findings as likely indicating that ''E. argentinus'' underwent a dietary shift toward herbivory during growth.
* A study on the anatomy and phylogenetic affinities of ''Lumkuia fuzzi'' is published by Benoit ''et al.'' (2022).
* New fossil material of ''Lufengia'' is described from the Lower Jurassic Lufeng Formation (China) by Liu ''et al.'' (2022), who interpret ''Dianzhongia'' as described on the basis of fossil material of an older individual of ''Lufengia''.
* Cabreira ''et al.'' (2022) provide evidence indicative of the presence of two sets of teeth falling within a range of wide variations of typically mammalian dental patterns in a Late Triassic cynodont ''Brasilodon'', and interpret this finding as potentially pushing the origin of the biological traits related to the presence of two sets of teeth in modern mammals, such as placentation, endothermy, fur or lactation, back to the Norian.
* Jäger ''et al.'' (2022) present evidence of different morphology and different modes of the occlusion of the molars in ''Erythrotherium parringtoni'' and ''Morganucodon watsoni'', and interpret their findings as supporting the classification of these mammaliaforms as distinct taxa.
* Description of the anatomy of the mandible and teeth of ''Hadrocodium wui'', including new information unavailable from previous fossil preparation, is published by Luo ''et al.'' (2022).
* Araújo ''et al.'' (2022) argue that morphological changes to the endolymph-filled semicircular ducts of the inner ear of synapsids were related to changes of their body temperatures, and that endothermy evolved abruptly during the Late Triassic in Mammaliamorpha, with all stem mammaliamorphs likely being ectotherms.

Mammals

Other animals

New taxa

Research

* A study on the biomarker composition of gut contents in Ediacaran macrofossils is published by Bobrovskiy ''et al.'' (2022), who interpret their findings as indicating that '' Calyptrina'' and ''Kimberella'' possessed a gut, displayed sterol metabolism comparable to extant invertebrates and fed on green algae and bacteria, while ''Dickinsonia'' shows no traces of dietary molecules, indicating a different feeding mode and possible external digestion.
* A study on the fossil record of Petalonamae, their survival of the Ediacaran–Cambrian transition and the timing and causes of their extinction is published by Hoyal Cuthill (2022).
* Redescription and a study on the life habits of ''Pteridinium simplex'' is published by Darroch ''et al.'' (2022).
* A study on the morphological variation and paleobiology of '' Fractofusus misrai'' is published by Taylor ''et al.'' (2022).
* Aragonés Suarez & Leys (2022) propose a method for identifying fossil organisms as sponge grade animals, and apply their method to a putative Ediacaran sponge ''Thectardis avalonensis''.
* A study on the impact of oxygenation pulses during the Cambrian Radiation on archaeocyath reef communities from the Siberian Platform ( Sakha, Russia), indicating that oxygenation events created temporary pulses of evolutionary diversification and enhanced ecosystem complexity, is published by Zhuravlev ''et al.'' (2022).
* Putative late Cambrian archaeocyath '' Antarcticocyathus webersi'' is reinterpreted as an anthaspidellid sponge by Lee (2022), leaving no evidence of archaeocyaths surviving beyond the middle Cambrian.
* '' Spongiostroma mæandrinum'' is reinterpreted as a keratosan demosponge by Lee & Riding (2022).
* Osés ''et al.'' (2022) describe exceptionally preserved fossil material of '' Corumbella werneri'' from the Ediacaran Tamengo Formation (Brazil), report that ''Corumbella'' had a biomineralized skeleton with a cataphract organization of calcareous plates and rings (sclerites) that enhanced flexibility, and interpret ''Corumbella'' as the oldest animal with a complex cataphract skeleton with biologically-controlled biomineralization reported to date.
* Bilaterian trace fossils originally reported from the Ediacaran Tacuarí Formation (Uruguay) are reinterpreted as actually Carboniferous–Permian in age and found in strata belonging to the San Gregorio Formation by Verde ''et al.'' (2022).
* A study on the phylogenetic affinities of ''Amiskwia sagittiformis'' is published by Bekkouche & Gąsiorowski (2022), who recover this animal as a stem-group chaetognath within the new clade Cucullophora.
* Liu ''et al.'' (2022) transfer ''" Ambrolinevitus" ventricosus'' to the genus '' Paramicrocornus'', erect a new family Paramicrocornidae, and evaluate the implications of paramicrocornids for the knowledge of the evolution of hyoliths.
* New fossil material of '' Doliutheca orientalis'', providing new information on the anatomy of this hyolith, is described from the Cambrian Shipai Formation (China) by Liu ''et al.'' (2022), who place this species in the family Paramicrocornidae.
* Sun, Zhao & Zhu (2022) describe new fossil material of '' Glossolites magnus'', and interpret its anatomy as indicating that this animal wasn't a hyolith.
* Description of the internal anatomy of embryos of '' Markuelia hunanensis'' from the Cambrian (Furongian) Bitiao Formation (Hunan, China) is published by Dong ''et al.'' (2022).
* Putative early deuterostome '' Saccorhytus coronarius'' is reinterpreted as an early ecdysozoan by Liu ''et al.'' (2022).
* Strausfeld ''et al.'' (2022) describe the fossilized nervous system of ''Cardiodictyon catenulum'', reporting the presence of an unsegmented head and brain comprising three cephalic domains, each of which aligns with one of three components of the foregut and with a pair of head appendages, and interpreting this finding as indicating that cephalic domains of ''C. catenulum'' predate the evolution of the euarthropod head; their conclusions are subsequently contested by Budd ''et al.'' (2023).
* Evidence that yunnanozoan branchial arches consisted of cellular cartilage with an extracellular matrix dominated by microfibrils (a feature hitherto considered specific to vertebrates) is presented by Tian ''et al.'' (2022), who interpret this finding as supporting the conclusion that yunnanozoans were stem vertebrates; their conclusions are subsequently contested by He ''et al.'' (2023) and Zhang & Pratt (2023).
* Redescription and a study on the affinities of '' Odonterpeton triangulare'' is published by Mann, Pardo & Sues (2022), who name a new recumbirostran clade Chthonosauria containing the families Brachystelechidae and Molgophidae.
* Klembara ''et al.'' (2022) present a reconstruction of the skull of ''Diadectes absitus''.

Other organisms

New taxa

Research

* Franz ''et al.'' (2022) report the find of at least 1.5-billion-years-old organisms from the Volyn pegmatite field associated with the Korosten Pluton (Ukraine), with the presence of a large variation of different types of filaments in the studied microfossils.

* A study on the morphometric variation, taxonomy, stratigraphic distribution and habitat settings of palaeopascichnids is published by Kolesnikov & Desiatkin (2022).
* Zhang & Zhang (2022) describe new embryo-like ''Megasphaera'' fossils from the Ediacaran Zhenba microfossil assemblage, and interpret the studied specimens as inconsistent with the metazoan interpretation of the Ediacaran ''Megasphaera'' fossils, and supporting their encysting-protist affinity.
* A study aiming to determine whether ''Dickinsonia'' grew by tissue patterning like animals or by meristems like plants and pseudomeristems like fungi, based on data from damaged specimens from the Ustʹ Pinega Formation (Russia), is published by Retallack (2022).
* Slater ''et al.'' (2022) present a global record of imprint nanoplankton fossils, and interpret their findings as contradicting the view that declines in nanofossil abundance through several past global warming events are evidence of biocalcification crises caused by ocean acidification and related factors.
* Evidence indicating that benthic foraminifera dispersed in plankton and renewed planktonic foraminifera diversity after the Cretaceous–Paleogene extinction event is presented by Morard ''et al.'' (2022).
* A study on the impact of the Paleocene–Eocene Thermal Maximum on tropical planktic foraminifera in the central Pacific Ocean is published by Hupp, Kelly & Williams (2022).
* Revision of the taxonomy, regional distribution, ecological preferences and stratigraphic significance of the middle Miocene foraminifera from the northern Namibian continental shelf is published by Bergh & Compton (2022).
* A study on the taphonomy and morphology of the type material of ''Charniodiscus concentricus'' is published by Pérez-Pinedo ''et al.'' (2022), who emend the generic diagnosis of ''Charniodiscus''.
* Scientists report the discovery of 830 million year old microorganisms in fluid inclusions within halite that may, potentially, still be alive. According to the researchers, "This study has implications for the search for life in both terrestrial and extraterrestrial chemical sedimentary rocks."

History of life in general

* Eckford-Soper ''et al.'' (2022) argue that the size distribution of preserved eukaryotic microfossils dating to 1.7 billion years ago and onward is most compatible with an active eukaryote ecosystem complete with phototrophy, osmotrophy, phagotrophy and mixotrophy.
* A study on the age of the Lantian biota is published by Yang ''et al.'' (2022).
* A study on ecosystem structure changes during the late Ediacaran is published by Eden, Manica & Mitchell (2022).
* A global database of the Ediacara Biota is compiled by Evans ''et al.'' (2022), who report that ~80% of taxa from the White Sea Ediacaran assemblage (ca. 560–550 million years old) are absent from the Nama interval (ca. 550–539 million years ago), representing a drop in diversity comparable to losses during Phanerozoic mass extinctions, and interpret their findings as indicative of existence of a link between this biotic turnover and environmental change.
* Green, Renne & Keller (2022) argue that the observed degree of temporal correlation between continental large igneous provinces and faunal turnovers in the Phanerozoic is unlikely to occur by chance, and that continental large igneous provinces might be major driver of extinctions throughout the Phanerozoic.
* A study on animal cognitive complexity in Cambrian and post-Cambrian marine ecosystems is published by Hsieh, Plotnick & Bush (2022).
* Review of the morphological, paleontological, developmental and molecular data on the early evolution of deuterostomes is published by Nanglu ''et al.'' (2022).
* A study on the fossil record of Cambrian marine invertebrates is published by Na ''et al.'' (2022), who outline time-traceable biogeographic provinces for this period and confirm an increase in regional differences of faunal composition through time.
* An association of palaeoscolecids, brachiopods and parasitic tube worms, interpreted as record of a brachiopod-dominated, vertically stratified benthic community where the different phyla filled multiple ecological niches, is reported from the Cambrian Stage 4 Wulongqing Formation (China) by Chen ''et al.'' (2022).
* Sun ''et al.'' (2022) report the discovery of the Linyi Lagerstätte, a new Drumian lagerstätte from the Zhangxia Formation (Shandong, China) containing a diverse and well-preserved Burgess Shale-type fossil assemblage.
* A study on the ecological processes that structured the composition of trilobite and echinoderm communities from the Central Anti-Atlas (Morocco), Montagne Noire (France) and Cordillera Oriental (Argentina) during the Early Ordovician is published by Saleh ''et al.'' (2022).
* A new tropical Lagerstätte containing a variety of soft tissues and rich shelly fossils, and preserving a fauna consisting of Cambrian relics as well as of taxa which originated during the Ordovician (Liexi fauna), is reported from the Lower Ordovician Madaoyu Formation (Hunan, China) by Fang ''et al.'' (2022).
* Saleh ''et al.'' (2022) describe a new fossil locality from the Ordovician Fezouata Shale (Morocco) named Taichoute, dominated by three-dimensionally preserved and heavily sclerotized fragments of large euarthropods, and extending the temporal distribution of fossil preservation from this formation into the upper Floian.
* Evidence of symbiotic associations of stromatoporoids with soft-bodied worms, calcareous tentaculitoid tubeworms and rugosans, as well as evidence of symbiotic associations of tabulate corals with cornulitids, is reported from the Silurian of Baltica (Belarus, Moldova, Russia and Ukraine) by Borisenko ''et al.'' (2022).
* Zapalski ''et al.'' (2022) report fossils of the cystoporate bryozoan ''Fistulipora przhidolensis'' and unidentified trepostomes intergrown with auloporid tabulate corals and putative hydrozoans from the Silurian (Přídolí) Ohesaare Formation (Estonia), and interpret the studied bryozoans and cnidarians as forming mutually beneficial associations, representing the oldest cases of such associations reported to date.
* A study on the coprolite material from early Tournaisian lacustrine facies at Celsius Bjerg on Ymer Ø in East Greenland is published by Byrne ''et al.'' (2022), who identify a greater number of coprolite morphotypes compared to vertebrate taxa known from skeletal material, and interpret this finding as indicative of unexpectedly high vertebrate diversity in the immediate aftermath of the late Devonian extinction.
* A study on patterns of latitudinal diversity gradients of marine invertebrate fossils during climatic changes from the Carboniferous icehouse to the Triassic greenhouse climates is published by Zhang, Shen & Erwin (2022), who interpret their findings as indicating that peaks of the latitudinal diversity gradients may be shaped by multiple factors rather than alternating icehouse and greenhouse climates.
* A study on the modifications to cranial anatomy in the early evolution of tetrapods is published by Rawson ''et al.'' (2022), who interpret their findings as indicating that reduction in the number of skull bones across the origin of tetrapods was associated with increased density (remaining bones acquired more connections), but also with skulls with fewer bones becoming more integrated and less modular across the fish-tetrapod transition, while no such change to skull construction was found between the first stem tetrapods and crown tetrapods from later in the Paleozoic.
* A study on rates of evolution and evolutionary constraints during the earliest (Carboniferous–early Permian) radiation of amniotes across their anatomy, examining differences between early synapsids and early reptiles, is published by Brocklehurst, Ford & Benson (2022).
* Review of the stratigraphic and paleontological data on the Permian equatorial ecosystem from Mallorca (Spain) is published by Matamales-Andreu ''et al.'' (2022).
* New fossil material from the Le Bousquet site in the Permian (Cisuralian) Red Sandstone Group of the Rodez Basin (France), including traces of protostomes, trails of fishes and tetrapod tracks, as well as remains of jellyfishes and plants, is described by Moreau & Gand (2022).
* Prevec ''et al.'' (2022) report a new Permian (probably early Wordian) fossil locality from the Karoo Basin in the Northern Cape Province, South Africa (the Onder Karoo locality), featuring a large abundance of exceptionally preserved fossils of freshwater and terrestrial insects, arachnids and plants.
* A study on changes in species composition of the brachiopod fossil record from the Permian Kapp Starostin Formation (Spitsbergen, Norway), and on their implications for the knowledge of the global significance of the Capitanian mass extinction event, is published by Lee ''et al.'' (2022).
* A study on changes in the composition of the Sundyr tetrapod assemblage (Russia) during the Middle-Late Permian transition is published by Shishkin (2022).
* Revision of tetrapod tracks from the Capitanian Pélitique Formation (France) is published by Marchetti ''et al.'' (2022).
* Review of the patterns of the Permian–Triassic extinction event in the ocean and on land, discussing the hypotheses surrounding the kill mechanisms of this extinction, is published by Dal Corso ''et al.'' (2022).
* A study on the ecological selectivity of marine extinctions across the end-Permian mass extinction in the South China region is published by Foster ''et al.'' (2022).
* A study on trace fossils from 400 horizons in 26 sections in South China and adjacent regions, spanning the uppermost Permian to topmost Lower Triassic strata, is published by Feng ''et al.'' (2022), who interpret their findings as indicating that a well-established infaunal ecologic structure developed in the late Early Triassic, before the full restoration of the epifauna-dominated ecosystem in the Middle Triassic.
* A study on an outcrop containing hundreds of Induan tetrapod fossils in the southern Karoo Basin of South Africa, including clusters of up to eight closely spaced ''Lystrosaurus'' skeletons (two of which display an envelope which is likely a permineralised mummified skin), is published by Smith, Botha & Viglietti (2022), who interpret this finding as evidence for episodes of drought-induced mass death, indicative of intensification of continental aridity ~252 million years ago by greenhouse gasses from the Siberian traps.
* A study on the ecological state of the Early Triassic benthic fauna from the Hiraiso Formation (Japan), comparing it with coeval assemblages from around the world, is published by Foster ''et al.'' (2022), who interpret their findings as indicating that the studied fauna represents an advanced stage of ecological recovery for the Early Triassic, but not full recovery, and interpret the distribution of the Early Triassic benthic faunas as consistent with the existence of oxygenated habitats associated with shallow marine shelves, serving as refuges for benthic marine ecosystems during the anoxic events, but also argue that the existence of such shallow marine habitable zones was not restricted solely to the anoxic events, and that recovery in shallow marine environments after the end-Permian mass extinction was delayed by some factor other than oxygen stress.
* Revision of the vertebrate fossil material from the Lower Triassic of the Big Bogdo Mountain (Astrakhan Oblast, Russia) is published by Novikov, Sennikov & Uliakhin (2022), who describe fossil material of land reptiles from the nearshore marine Bogdо Formation which might represent the first record of erythrosuchids from this locality.
* Diverse assemblage of tetrapods, including a lonchorhynchine trematosaurid, at least two taxa of capitosauroid temnospondyls, a kannemeyeriiform dicynodont, procolophonid parareptiles and several taxa of archosauromorph reptiles (including the first definite record of ''Tanystropheus'' from eastern North America), is described from the Middle Triassic Economy Member of the Wolfville Formation (Nova Scotia, Canada) by Sues ''et al.'' (2022).
* Otero ''et al.'' (2022) describe new vertebrate remains from the Triassic "Estratos El Bordo" unit in the Atacama Desert (Chile), including freshwater ray-finned fishes and the first known temnospondyl material from the El Bordo Basin.
* Shi, Chen & Liu (2022) report a new tetrapod locality from the Upper Triassic Tanzhuang Formation (Jiyuan, China), preserving fossil material of a capitosauroid belonging or closely related to the genus ''Mastodonsaurus'' (expanding the distribution of its lineage to the Late Triassic of East Asia) and a pelvis of a tetrapod of uncertain affinities.
* Feng ''et al.'' (2022) present evidence of a trophic cascade from the Upper Triassic Xujiahe Formation (Sichuan, China), describing insect eggs placed between the upper and lower cuticles of the ginkgophyte '' Baiera multipartita'', and interpreting punctures on the eggshell surfaces as indicating that the studied eggs were damaged by a predatory insect.
* A study on the thermal ecology of 13 terrestrial Late Triassic amniotes (synapsids and archosauromorph reptiles) is published by Hartman ''et al.'' (2022), who report that thermal tolerances are sufficient to constrain the latitudinal distribution of the studied taxa, with small mammaliamorphs being able to persist at high latitudes with nocturnal activity and daytime burrowing.
* A study on the impact Early Jurassic Jenkyns Event, affecting terrestrial environments with global warming, perturbation of the carbon cycle, enhanced weathering and wildfires, on terrestrial ecosystems, including plant and dinosaur assemblages, is published by Reolid, Ruebsam & Benton (2022).
* Allain ''et al.'' (2022) describe the Berriasian continental vertebrate fauna from the Angeac-Charente bonebed (France).
* A study on the diversity of the vertebrates in the Yanliao Biota, comparing this biota with other biotas of similar age, is published by Liu, Wu & Han (2022).
* Revision of the Early Cretaceous vertebrate fauna from the Khok Pha Suam locality (Khok Kruat Formation, Thailand) is published by Manitkoon ''et al.'' (2022).
* Pochat-Cottilloux, Allain & Lasseron (2022) describe the microvertebrate remains from the Lower Cretaceous Gadoufaoua deposits in the Iullemmeden Basin (Niger), including the first fossil material of '' Tribodus'', Amiiformes, frogs, ornithocheirid pterosaurs and a stem-boreosphenidan mammal from Gadoufaoua.
* Revision of the Cenomanian continental vertebrate fauna from the Gara Samani area (Algeria) is published by Benyoucef ''et al.'' (2022).
* New fossil material of marine vertebrates ( ptychodontid sharks, enchodontid teleosts and mosasaurs) is described from the Upper Cretaceous (Coniacian-Santonian) Karababa Formation (Turkey) by Bardet ''et al.'' (2022), extending known geographic range of the genera ''Platecarpus'' and ''Enchodus'', and possibly of the species '' Ptychodus mortoni''.
* A diverse biotic community comprising bacteria, fungi, nematodes, several types of arthropods, and marine bivalves is reported from the fossil wood assemblage from the Santonian Mzamba Formation (South Africa) by Philippe ''et al.'' (2022).
* A diverse vertebrate fauna, sharing similarities with lowland to marginal marine ecosystems in the Oldman and Dinosaur Park formations (which were deposited in southern Alberta prior to the gap in the terrestrial fossil record caused by a transgression of the inland Bearpaw Seaway during the latter part of the Campanian), is described from the Unit 3 of the strictly terrestrial Wapiti Formation (Alberta, Canada) by Fanti ''et al.'' (2022).
* Description of the Late Cretaceous (Campanian–Maastrichtian) vertebrate fauna from the J&M site ( Williams Fork Formation; Colorado, United States) is published by Brand ''et al.'' (2022).
* A study on the Late Cretaceous trace fossil assemblage from the Chicxulub area (Gulf of Mexico), revealing the presence of a diverse macrobenthic tracemaker community in the Yucatán area prior to the Chicxulub impact event, is published by Rodríguez-Tovar ''et al.'' (2022).
* A study on the magnitude of ecological change from the Campanian to the Danian, as indicated by fossil record of North American vertebrates, is published by García-Girón ''et al.'' (2022), who interpret their findings as indicative of trophic restructuring in the latest Cretaceous dinosaur faunas, with decline of megaherbivores being counterbalanced by stronger influence of medium-sized species on Maastrichtian food webs, but otherwise indicating that dinosaur niches were stable and static, which might have placed dinosaurs at a disadvantage in the event of an abrupt shutdown of the trophic network, while smaller vertebrates, including mammals, consistently increased their impact on food webs, beginning in the latest Cretaceous and continuing in the Paleocene.
* Khand ''et al.'' (2022) report the discovery of new fossiliferous localities from the Paleogene Naran Bulak Formation (Mongolia), preserving ostracod fossils and a mammal fauna that does not fit easily with established biostratigraphic patterns, with fossils of '' Archaeolambda'' and '' Palaeostylops'' (suggesting a Paleocene age) co-occurring with fossils of '' Gomphos elkema'' (suggesting an Eocene age).
* Revision of the vertebrate fossil material from the Miocene deposits of the Zaysan Basin in Central Asia is published by Kovalchuk ''et al.'' (2022), who argue that the studied fossil indicate an Early Miocene age of the Zaysan Formation, and report amiid remains representing the most recent record of the family (and of Halecomorphi in general) outside North America reported to date.
* McCurry ''et al.'' (2022) report the discovery of a new Miocene Lagerstätte named McGraths Flat (New South Wales, Australia), preserving a rich diversity of microfossils, plants, insects, spiders, and vertebrate remains, and preserving evidence of several species interactions, including predation, parasitism and pollination.
* Revision of the late Miocene vertebrate fauna of Builstyn Khudag (Mongolia) is published by Daxner-Höck ''et al.'' (2022).
* A study on the relationship between landscape and climatic changes and the evolution of the late Miocene faunas of terrestrial vertebrates and marine mammals of southeastern Europe is published by Zelenkov ''et al.'' (2022).
* Kostopoulos ''et al.'' (2022) report a new Lower Pleistocene (probably late Villafranchian) vertebrate site, Krimni-3, from Mygdonia Basin (Greece), preserving fossil material of several taxa of mammals, as well as a femur of '' Pachystruthio dmanisensis'', representing the southernmost known occurrence of this species, as well as the first record of a giant ostrich in Greece and southeastern Europe in general.
* Kjær ''et al.'' (2022) report the discovery of ancient environmental DNA from Kap København Formation in North Greenland, interpreted as indicative of the presence of an open boreal forest with diverse plant and animal species (including mastodons, reindeer, hares, rodents, geese, horseshoe crabs and green algae) approximately two million years ago, representing an ecosystem that has no present-day analogue.
* Fernández-Monescillo ''et al.'' (2022) document fossil material of the notoungulate species ''Mesotherium cristatum'' from the middle Pleistocene deposits in the west Pampean Region of the Córdoba Province (Argentina), representing a new Last Appearance Datum for this species, and interpret this finding as indicating ''M. cristatum'' should no longer be considered as the guide taxon of the Ensenadan, and that the temporal boundaries of the biostratigraphic units established for the Pampean Region can only be supported by fossil evidence and not by the temporal boundaries of the chronostratigraphic units as has been used so far.
* A study on the stratigraphy and age for the Trinil site (Java, Indonesia) and its fossils is published by Hilgen ''et al.'' (2022), who interpret their findings as challenging the assumption that the Trinil H. K. Fauna – which includes ''Homo erectus'' – is a homogeneous biostratigraphic unit.
* Evidence from the sedimentary ancient DNA from the Batagay megaslump ( Sakha, Russia) indicative of ecosystem-wide changes between Pleistocene glacial and interglacial intervals in East Siberia is presented by Courtin ''et al.'' (2022).
* A study on the impact of the extinct Neotropical megafauna on the variability in plant functional traits and biome geography in Central and South America is published by Dantas & Pausas (2022).
* A study on the relative abundances of fossil squamates and anurans from McEachern's Deathtrap Cave (Australia), aiming to determine whether compositional changes of this fauna during the last ~14,000 years were related to late Pleistocene–Holocene climatic fluctuations, is published by Ramm ''et al.'' (2022).
* A study aiming to reconstruct Holocene feeding guilds in extinct megaherbivores of Madagascar on the basis of carbon and nitrogen isotope data is published by Hansford & Turvey (2022).
* A study on the daily dentine apposition rates in extant and fossil amniotes, aiming to test the hypothesized daily limits of odontoblast activity, examine phylogenetic and allometric patterns of dentine growth evolution and reconstruct ancestral states of daily dentine apposition for major amniote clades, is published by Finch & D'Emic (2022).
* A study on the evolutionary history of the major patterns of primary ossification of the vertebral column in living and fossil amniotes, incorporating data from exceptionally well-preserved fossils of ''Mesosaurus tenuidens'', is published by Verrière, Fröbisch & Fröbisch (2022), who interpret their findings as indicative of stability of vertebral development patterns in amniotes since their common ancestor.

Other research

* A study aiming to infer atmospheric oxygen concentrations over the past 1.5 billion years is published by Krause ''et al.'' (2022), who interpret their findings as indicating that there was no simple unidirectional rise in atmospheric oxygen levels during the Neoproterozoic and the first animals evolved against a backdrop of extreme O₂ variability, with atmospheric O₂ levels oscillating between ~1 and ~50% of the present atmospheric level during the Neoproterozoic.
* A study on the diagnostic characteristics of the Chengjiang Biota deposit and on its sedimentary environment is published by Saleh ''et al.'' (2022).
* Zhao ''et al.'' (2022) use a continuous astronomical signal detected as geochemical variations in the late Cambrian Alum Shale Formation (Sweden) to establish a 16-million-years-long astronomical time scale, providing detailed temporal constraints on the paleoenvironmental and biological changes during the late Cambrian.
* Evidence of rapid marine oxygen fluctuations in the Late Ordovician oceans, with strong temporal link to mass extinction pulses at the end of the Ordovician, is presented by Kozik ''et al.'' (2022).
* Jing ''et al.'' (2022) present evidence of the occurrence of a true polar wander event 450–440 million years ago, and interpret this event as explaining the timing and migration of glacial centers across Gondwana, as well as the protracted end-Ordovician mass extinction.
* Evidence indicating that the evolution of vascular plants and the expansion of terrestrial vegetation initiated at the end of the Llandovery Epoch enhanced the complexity of weathering and sedimentary systems and altered the composition of continental crust is presented by Spencer ''et al.'' (2022).
* A study on the lithology and stratigraphy of the Famennian-aged Lebedjan Formation (Lipetsk Oblast, Russia), on the composition of the Lebedjan biota and on its paleoenvironment, is published by Bicknell & Naugolnykh (2022).
* A study on the development of the mid-late Cisuralian environments and ecosystems in central Pangaea, based on data from the late Cisuralian fossil assemblage of the Southern Alps and its comparison with other Cisuralian assemblages, is published by Marchetti ''et al.'' (2022).
* A study on the age of the vertebrate-bearing Permian deposits of the Chickasha Formation (Oklahoma, United States) and San Angelo Formation (Texas, United States) is published by Laurin & Hook (2022).
* The first shallow-marine methane seeps reported from the Australian Upper Paleozoic, as well as a new seep biota, are described from the Sakmarian lower Holmwood Shale in the Irwin Basin by Haig ''et al.'' (2022).
* Revision of the biostratigraphy of the Permian to Triassic Beaufort Group (Karoo Supergroup; South Africa) is published by Viglietti ''et al.'' (2022).
* A study on the timeline and character of environmental changes in the Bowen Basin (Queensland, Australia) leading up to the Permian–Triassic extinction event is published by Fielding ''et al.'' (2022).
* A study investigating fossilised shells of gastropods and bivalves from the Permian–Triassic succession exposed at Lusitaniadalen (Svalbard, Norway) for dissolution and repair marks, and aiming to determine whether a worldwide ocean acidification event occurred during the Permian–Triassic transition, is published by Foster ''et al.'' (2022).
* A study on changes of lithium and strontium isotope composition of seawater in the Permian to Early Triassic is published by Cao ''et al.'' (2022), who report evidence of a sharp decrease of the lithium isotope composition of seawater in the Late Permian and of persistence of low seawater lithium isotope values throughout the Early Triassic, interpreted by the authors as likely caused by increased reverse weathering rates, potentially explaining the failure of chemical weathering to draw down atmospheric CO₂ levels during the Early Triassic.
* A continuous record of atmospheric CO₂ during the Permian-Triassic transition from the Shangsi section (China) is presente by Shen ''et al.'' (2022), who also study changes of marine phytoplankton community structure across this interval, and interpret their findings as indicating that while the first extinction pulse of the Permian–Triassic extinction event in the latest Permian appears to have been associated with intense initial weathering that briefly suppressed the atmospheric CO₂, it was followed by a rapid rise to a prolonged high atmospheric CO₂, and the second extinction pulse in the Early Triassic was sustained by food web collapse driven by the expansion of bacterial production in response to oligotrophic conditions.
* Evidence from the Bristol Channel Basin (United Kingdom), indicating that intensive euxinia and acidification driven by Central Atlantic magmatic province activity formed a two-pronged kill mechanism at the end-Triassic mass extinction, is presented by Fox ''et al.'' (2022).
* Onoue ''et al.'' (2022) present a continental weathering record in the northwestern Tethys during the end-Triassic mass extinction event, inferred from strontium, carbon and oxygen isotope data from carbonate–clastic deposits in the Kardolína section (Slovakia), and interpret their findings as indicating that the marine environment in the Late Triassic European basins may have developed an oxygen minimum zone due to the increase in continental weathering during the latest Rhaetian, which might have had an important role in the marine end-Triassic extinction.
* Review of the late Early Jurassic Karoo biota from southern Africa and its geological framework is published by Bordy ''et al.'' (2022).
* A study on the age of the Early Cretaceous fossil assemblage from the Moqi fossil bed (China) is published by Yu ''et al.'' (2022).
* Rodríguez-López ''et al.'' (2022) report evidence from the Lower Cretaceous Luohe Formation (Ordos Basin, China) interpreted as indicative of the occurrence of permafrost in a plateau desert during the Cretaceous supergreenhouse, analogous to modern permafrost in the Western Himalayas.
* Beveridge ''et al.'' (2022) present new radioisotopic ages for the Campanian Wahweap Formation (Utah, United States), a lithostratigraphic revision and a review of the spatio-temporal distribution of vertebrate fossils from this formation, including revised ages for early tyrannosaurid, hadrosaurid and centrosaurine dinosaurs.
* A set of geochronologic data from the Campanian geological formations of North America's Western Interior Basin is presented by Ramezani ''et al.'' (2022), who consider their findings to be indicative of significant age overlap between the main fossil-bearing intervals of the Kaiparowits, Judith River, Two Medicine and Dinosaur Park formations, and interpret their findings as refuting inferences that the proposed latitudinal provinciality of the Campanian dinosaur taxa is only an artefact of age misinterpretation.
* A study on the age of the Cape Lamb Member of the Snow Hill Island Formation and of the overlying Sandwich Bluff Member of the Lopez de Bertodano Formation (Vega Island, Antarctica) is published by Roberts ''et al.'' (2022), who interpret their findings as indicating that Mesozoic marine vertebrates and non-avian dinosaurs persisted in Antarctica up to the terminal Cretaceous.
* Nicholson ''et al.'' (2022) present evidence of a previously unidentified probable impact crater ( Nadir crater) on the southwest Guinea Terrace (offshore West Africa, exclusive economic zone of Guinea), interpreted as formed at or near the Cretaceous-Paleogene boundary and approximately the same age as the Chicxulub impact crater, and possibly formed by an impactor which broke off from the larger Chicxulub asteroid or was a part of a longer-lived impact cluster.
* A study on the bone apposition in three paddlefish dentaries and three sturgeon pectoral fin spines from the Tanis site (North Dakota, United States), aiming to pinpoint the season in which bone apposition terminated, is published by During ''et al.'' (2022), who interpret their findings as indicating that the impact that caused the Cretaceous–Paleogene extinction event took place during boreal spring.
* Review of the environmental consequences of the Chicxulub impact at the Cretaceous–Paleogene boundary is published by Morgan ''et al.'' (2022).
* Auderset ''et al.'' (2022) present evidence from foraminifera-bound nitrogen isotopes interpreted as indicating that during the Early Eocene Climatic Optimum and Middle Miocene Climatic Optimum the ocean's oxygen-deficient zones contracted rather than expanded.
* Brachert ''et al.'' (2022) present oxygen and carbon isotope time series from reef corals from the Middle Eocene Climatic Optimum (~40 million years ago) from the sands of Auvers (France), who interpret their findings as providing evidence of zooxanthellate symbiosis in tropical reef corals of the Paleogene, as well as providing evidence of subdued sea surface temperature seasonality of 7° to 8 °C during the Middle Eocene Climatic Optimum.
* Evidence of preservation of porphyrins in a gar belonging to the genus ''Atractosteus'' from the Messel pit (Germany), possibly representing diagenetically altered heme originating from the fossil, is presented by Siljeström, Neubeck & Steele (2022).
* A study on the early Oligocene-middle Miocene wildfire history of the northern Tibetan Plateau and on the relationship between wildfire frequencies and temperature changes, based on data from sedimentary records of the microcharcoals from the Qaidam Basin, is published by Miao ''et al.'' (2022).
* New information of the age, stratigraphy, biota and palaeoenvironment of the Miocene Els Casots site (Vallès-Penedès Basin; Catalonia, Spain) is presented by Casanovas-Vilar ''et al.'' (2022).
* A study aiming to reconstruct the middle Miocene habitats on the northern North American Great Plains, as indicated by stable carbon isotope data from a wide variety of fossil ungulates from four local faunas in Nebraska of late Barstovian age, is published by Nguy & Secord (2022).
* Miao ''et al.'' (2022) present evidence from pollen records from the northern Tibet plateau, interpreted as indicating that the plateau obtained its current elevation approximately 10 million years ago.
* A study on the environmental variability in Africa during the Pliocene, and on the impact of this environmental variability on the evolution of African mammals, is published by Cohen ''et al.'' (2022).
* A study on the habitat types at the Woranso-Mille site (Ethiopia) during the Pliocene, and on factors which allowed the coexistence of more than one species of ''Australopithecus'' at the site, is published by Denise Su & Yohannes Haile-Selassie (2022).
* A study on the environmental context of hominin evolution in the Plio-Pleistocene of Africa, as indicated by oxygen and carbon enamel isotope data from carnivorans from the Omo Group of the Turkana Basin (Kenya), is published by Hopley ''et al.'' (2022).
* Zachariasse & Lourens (2022) interpret the sediments from Crete (Greece) preserving the Trachilos footprints as late Pliocene in age, thus dating to the time when Crete was separated from mainland Greece and Turkey by stretches of deep water which were at least 100 km wide, and interpret this finding as indicating that the putative footprints were highly unlikely to be produced by hominins, and casting doubts on whether they were footprints at all.
* A study on the age of the Xiashagou Fauna from the Nihewan Basin in northern China is published by Tu ''et al.'' (2022), who interpret the age of this fauna as consistent with the ages of the Senèze and Olivola Faunas in Europe, and possibly indicative of the existence of an ecological corridor for faunal dispersals across northern Eurasia during the early Pleistocene.
* Evidence of the association of burnt tusk and burnt lithics within a clearly defined archaeological horizon at the Lower Paleolithic site of Evron Quarry (Israel), dated between 1.0 and 0.8 Mya and lacking visual signatures for fire, is presented by Stepka ''et al.'' (2022).
* A study on the relative importance of six drivers of vegetation change (moisture availability, fire activity, mammalian herbivore density, temperature, temperature seasonality, CO₂) in western Africa over the past ~500,000 years, comparing past environmental change data from Lake Bosumtwi (Ghana) with global data, is published by Gosling ''et al.'' (2022), who interpret their findings as indicating that shifts in atmospheric CO₂ concentrations did not drive changes in woody cover in the tropics at the millennial scale.
* A study aiming to reconstruct the history of sea level at the Bering Strait since 46,000 years ago is published by Farmer ''et al.'' (2022), who find that the Bering Strait was open from at least 46,000 until 35,700 years ago, dating the last formation of the land bridge to within 10,000 years of the Last Glacial Maximum.
* Woolly mammoth, steppe bison, caballine horse and willow ptarmigan mitochondrial genomes are reconstructed from samples of permafrost silts from central Yukon (Canada) spanning the last 30,000 years by Murchie ''et al.'' (2022).
* A study on the timing of the opening of the ice-free corridor along the eastern front of the Rocky Mountains in the late Pleistocene, aiming to determine whether this corridor was available for the first peopling of the Americas after the Last Glacial Maximum, is published by Clark ''et al.'' (2022).
* Wiemann & Briggs (2022) demonstrated the presence of different biological signals in Raman and Fourier-transform infrared spectroscopy data of a diversity of carbonaceous animal fossils through independent laboratory confirmation (2022).
* A study on the impact of food hardness and size on the morphology of the mandible of extant pigs, and on its implications for the use of mandibular morphology as a proxy in paleodietary reconstructions, is published by Neaux ''et al.'' (2022).
* Amano ''et al.'' (2022) present a method to mathematically isolate and selectively eliminate the taphonomic deformation of a fossil skull for restoration of its original appearance, and apply this method to reconstruction of a skull of ''Mesopithecus'' from the late Miocene of Greece.
* Demuth ''et al.'' (2022) present a new method for volumetric three-dimensional reconstructions of musculature in extant and extinct taxa, and apply this method to reconstruction of the hindlimb musculature of ''Euparkeria capensis''.
* Lallensack & Falkingham (2022) present a new method that allows for estimating limb phase based on variation patterns in long trackways, and use this method to estimate limb phases of giant wide-gauged sauropod dinosaurs that produced three long trackways from the Albian De Queen Formation (Arkansas, United States).
* Gates ''et al.'' (2022) present new method that allows for differentiation of various geographic distributional hypotheses using information from the fossil record about entire communities, apply this method to datasets of pollen and ceratopsid dinosaurs from the Late Cretaceous Western Interior Basin of North America, and interpret their findings as indicative of the presence of two plant communities with a transition zone of unknown width between them, while finding no evidence of a biogeographical pattern in the distribution of ceratopsids.
* Survey of examples of scientific practices stemming from colonialism, focusing on the studies of fossils from Brazil (Araripe Basin) and Mexico (Sabinas, La Popa and Parras basins) published during 1990–2021, is published by Cisneros ''et al.'' (2022), who propose recommendations to scientists, journals, museums, research institutions and government and funding agencies to overcome these practices.
* A study on the history and legality of Myanmar amber use in the literature, providing evidence of links between research interest in Myanmar amber and major political, legal and economic changes, and indicating that the vast majority of publications on this amber do not include researchers from Myanmar as co-authors, is published by Dunne ''et al.'' (2022).
* Stewens, Raja & Dunne (2022) review the history of fossil removal under colonial rule, and evaluate potential avenues for their return under public international law.

Paleoclimate

* Evidence indicating that the global warming which led to the end-Permian mass extinction was initiated by emissions of large quantities of high temperature methane generated from oils from a large igneous province is presented by Chen ''et al.'' (2022).
* Evidence oxygen isotope ratios from Changhsingian ostracods of north-western Iran, interpreted as indicative of gradual rise of ambient seawater temperature beginning at least 300,000 years prior to the main extinction event of the end-Permian mass extinction, is presented by Gliwa ''et al.'' (2022).
* Joachimski ''et al.'' (2022) reconstruct late Permian to Middle Triassic atmospheric CO₂ record, and interpret their findings as indicative of an approximate fold increase in ''p''CO₂ from the latest Permian to Early Triassic.
* A study on the climate response to orbital variations in a Late Triassic midlatitude temperate setting in Jameson Land (Greenland) and the tropical low paleolatitude setting of the Newark Basin is published by Mau, Kent & Clemmensen (2022).
* Olsen ''et al.'' (2022) present evidence from the Late Triassic and Early Jurassic strata of the Junggar Basin (northwest China) indicating that, despite extraordinary high partial pressure of CO₂, freezing winter temperatures characterized high Pangaean latitudes during the early Mesozoic.
* Jones, Petersen & Curley (2022) report carbonate clumped isotope paleotemperatures of the mid-Cretaceous thermal maximum measured from Cenomanian oyster fossils of the Western Interior Seaway, and interpret their findings as indicative of extreme mid-latitude warmth in North America.
* A study on the latitudinal temperature gradient over the last 95 million years, as indicated by data from planktonic foraminifera δ¹⁸O, is published by Gaskell ''et al.'' (2022).
* A study on the sulfur isotope anomalies in the Cretaceous-Paleogene boundary impact debris and overlying sediments is published by Junium ''et al.'' (2022), who interpret their findings as evidence of injection of massive amounts of sulfur into the stratosphere in the aftermath of the Chicxulub impact, and evidence of the role of the sulfur-bearing gases in driving a postimpact winter.
* A study on changes of deep ocean temperature across the past 65 million years, inferred from clumped isotope thermometry, is published by Meckler ''et al.'' (2022), whose temperature estimates from the deep Atlantic Ocean are overall much warmer compared with oxygen isotope–based reconstructions.
* A study on climate changes in central China from the late Palaeocene to early Eocene, inferred from palynological assemblages in the Tantou Basin (Henan, China), is published by Su ''et al.'' (2022), who interpret their findings as indicative of a sudden climate change in the early Eocene which might signal the emergence of the East Asian Monsoon.
* Agterhuis ''et al.'' (2022) report deep-sea temperature estimates across the Eocene Thermal Maximum 2 and the hyperthermal event that occurred approximately 2 million years after the Paleocene–Eocene Thermal Maximum (approximately 54 million years ago).
* A study on the climatic impact of oceanic gateway changes at the Eocene–Oligocene Transition is published by Straume ''et al.'' (2022).
* A study on the ocean crustal production (a proxy for tectonic degassing of carbon) since the Miocene is published by Herbert ''et al.'' (2022), who argue that changes in tectonic degassing of carbon can account for the majority of long-term ice sheet and global temperature evolution throughout the past 20 million years.
* A study on the impact of climate variability on the evolution of early African ''Homo'', Eurasian ''Homo erectus'', ''Homo heidelbergensis'', Neanderthals and modern humans is published by Timmermann ''et al.'' (2022).
* Foerster ''et al.'' (2022) present a 620,000-year environmental record from Chew Bahir (Ethiopia), providing evidence of three distinct phases of climate variability in eastern Africa which coincided with shifts in hominin evolution and dispersal.
* Evidence of five phases of lake development at Tayma (Saudi Arabia) is presented by Neugebauer ''et al.'' (2022), who interpret their findings as indicative of unexpectedly short duration (dating from 8800 to 7900 years before present) of the Holocene Humid Period in Northern Arabia.

References

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