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Tyrannomimus
''Tyrannomimus'' (meaning "tyrant mimic") is an extinct genus of ornithomimosaurian theropod dinosaurs from the Kitadani Formation of Japan. The type species is ''Tyrannomimus fukuiensis''. Discovery and naming ''Tyrannomimus'' is based on the holotype FPDM-V-11311, a partial postrcranial skeleton. Multiple referred specimens are also known. They were named as a new genus and species of ornithomimosaur in 2023. The generic name, "''Tyrannomimus''", is a reference to its morphological similarities with tyrannosauroids, particularly the vertical ridge of the ilium previously believed to be a synapomorphy of that clade and shared with ''Aviatyrannis''. The specific name, "''fukuiensis''", refers to Fukui Prefecture where the fossils were found. Classification ''Tyrannomimus'' was entered in a phylogenetic analysis by Hattori ''et al.'' (2023) and placed within the family Deinocheiridae, as the sister taxon to ''Harpymimus''. Their cladogram is shown below: Although it wasn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tyrannomimus Fossils
''Tyrannomimus'' (meaning "tyrant mimic") is an extinct genus of ornithomimosaurian theropod dinosaurs from the Kitadani Formation of Japan. The type species is ''Tyrannomimus fukuiensis''. Discovery and naming ''Tyrannomimus'' is based on the holotype FPDM-V-11311, a partial postrcranial skeleton. Multiple referred specimens are also known. They were named as a new genus and species of ornithomimosaur in 2023. The generic name, "''Tyrannomimus''", is a reference to its morphological similarities with tyrannosauroids, particularly the vertical ridge of the ilium previously believed to be a synapomorphy of that clade and shared with ''Aviatyrannis''. The specific name, "''fukuiensis''", refers to Fukui Prefecture where the fossils were found. Classification ''Tyrannomimus'' was entered in a phylogenetic analysis by Hattori ''et al.'' (2023) and placed within the family Deinocheiridae, as the sister taxon to ''Harpymimus''. Their cladogram is shown below: Although it was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kitadani Formation
The Kitadani Formation ( ''Kitadani-sō'') is a unit of Lower Cretaceous sedimentary rock which crops out near the city of Katsuyama in Fukui Prefecture, Japan, and it is the primary source of Cretaceous-aged non-marine vertebrate fossils in Japan. Dinosaur remains are among the fossils that have been recovered from the formation, but it also preserves a diverse assemblage of plants, invertebrates, and other vertebrates.Weishampel, D.B.; et al. (2004). "Dinosaur distribution (Early Cretaceous, Asia)." In: Weishampel, D.B.; Dodson, P.; and Osmólska, H. (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 563-570. . Most, if not all, of the fossil specimens collected from the Kitadani Formation are reposited at the Fukui Prefectural Dinosaur Museum. The Kitadani Formation is a unit within the Tetori Group, a major sequence of Lower Cretaceous rocks that is distributed across Fukui, Ishikawa, and Gifu prefectures of western-central Honshu. The Tetori Group ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aviatyrannis
''Aviatyrannis'' is a genus of coelurosaurian theropod dinosaur, either a tyrannosauroid or an ornithomimosaurian, from the Oxfordian-Tithonian stages of the Late Jurassic found in Portugal. Discovery and naming In 2000 Oliver Walter Mischa Rauhut reported the find of tyrannosauroid material in the lignite coal mine of Guimarota near Leiria, which he referred to ''Stokesosaurus''. Later concluding the distinctiveness of the material justified a separate genus, Rauhut in 2003 named and described it as the type species ''Aviatyrannis jurassica''. The species name was by Rauhut given the intended meaning of "tyrant's grandmother from the Jurassic". The generic name is derived from Latin ''avia'', "grandmother", and ''tyrannus'', "tyrant", on the presumption ''tyrannis'' would be its genitive. The specific name means "Jurassic". The holotype, IPFUB Gui Th 1, was found in a layer of the Alcobaça Formation dating from the early Kimmeridgian, about 155 million years old. It c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deinocheiridae
Deinocheiridae is an extinct family of ornithomimosaurian dinosaurs, living in Asia and North America from the Aptian until the Maastrichtian, with a possible Late Jurassic record in Europe. The family was originally named by Halszka Osmólska and Roniewicz in 1970, including only the type genus ''Deinocheirus''. In a 2014 study by Yuong-Nam Lee and colleagues and published in the journal ''Nature'', it was found that Deinocheiridae was a valid family. Lee ''et al.'' found that based on a new phylogenetic analysis including the recently discovered complete skeletons of ''Deinocheirus'', the type genus, as well as '' Garudimimus'' and ''Beishanlong'', could be placed as a successive group, with ''Beishanlong'' as the most primitive and ''Deinocheirus'' as most derived. The family Garudimimidae, named in 1981 by Rinchen Barsbold, is now a junior synonym of Deinocheiridae as the latter family includes the type genus of the former. The group existed from 115 to 69 million years ago, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraxenisaurus Normalensis As Deinocheirid
''Paraxenisaurus'' (, meaning "strange lizard") is an extinct genus of ornithomimosaurian theropod from the Late Cretaceous Cerro del Pueblo Formation of Coahuila in Mexico. The genus contains a single species, ''P. normalensis'', which is known from a few bones of tail, hips, hands, and feet. The specific epithet was given in honor of the Benemérita Normal School of Coahuila, a teacher training institution, where the fossils were reposited. It is a member of the family Deinocheiridae and is the only member of that clade known from Laramidia. Discovery During the 1990s, ornithomimosaur fossils were discovered at three sites in the Cerro del Pueblo Formation of Coahuila state. The known specimens of ''Paraxenisaurus'' were collected from three different localities near the towns of Parras de la Fuente and General Cepeda. Two decades later, these remains were identified as belonging to a distinct North American ornithomimosaur taxon. In 2020, they were named and described ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2023 In Archosaur Paleontology
This article records new taxa of every kind of fossil archosaur that were scheduled to be Binomial nomenclature, described during 2023, as well as other significant discoveries and events related to the paleontology of archosaurs that were published in 2023. Pseudosuchians New pseudosuchian taxa General pseudosuchian research * Evidence of the impact of the interplay of abiotic and biotic processes on the evolution of pseudosuchians is presented by Payne ''et al.'' (2023). * A study on the biomechanical properties of the skull of ''Riojasuchus, Riojasuchus tenuisceps'' is published by Taborda, Von Baczko & Desojo (2023), who propose that ''R. tenuisceps'' could have had a wading habit, feeding on small-sizey prey caught from the shoreline. * A study on the bone histology of ''Decuriasuchus, Decuriasuchus quartacolonia'' is published by Farias ''et al.'' (2023), who interpret their findings as indicative of early ontogenetic stage of known specimens, which might have stay ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraxenisaurus
''Paraxenisaurus'' (, meaning "strange lizard") is an extinct genus of ornithomimosaurian theropod from the Late Cretaceous Cerro del Pueblo Formation of Coahuila in Mexico. The genus contains a single species, ''P. normalensis'', which is known from a few bones of tail, hips, hands, and feet. The specific epithet was given in honor of the Benemérita Normal School of Coahuila, a teacher training institution, where the fossils were reposited. It is a member of the family Deinocheiridae and is the only member of that clade known from Laramidia. Discovery During the 1990s, ornithomimosaur fossils were discovered at three sites in the Cerro del Pueblo Formation of Coahuila state. The known specimens of ''Paraxenisaurus'' were collected from three different localities near the towns of Parras de la Fuente and General Cepeda. Two decades later, these remains were identified as belonging to a distinct North American ornithomimosaur taxon. In 2020, they were named and described ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dzharacursor Bissektensis
''Dzharacursor'' (meaning "Dzharakuduk runner") is a genus of ornithomimid theropod dinosaurs from the Late Cretaceous (Turonian age) Bissekty Formation of Uzbekistan. The type and only species is ''Dzharacursor bissektensis'', originally assigned to the genus ''Archaeornithomimus''. Discovery and naming In 1995, Nesov named a new species of ornithomimosaur from the Bissekty Formation as ''Archaeornithomimus bissektensis'', based on the holotype CCMGE 479/12457 (formerly N 479/12457), a femur of a juvenile individual, along with other referred specimens including the metatarsals. However, in subsequent studies, the affinity of ''A. bissektensis'' was generally doubted or not mentioned. In 2025, Averianov & Sues assigned this taxon to the new genus ''Dzharacursor''. The new generic name combines Dzharakuduk, the name of the locality where its fossils were found, with the Latin word ''cursor'', meaning "runner". They also referred various partial cranial and postcranial material ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deinocheirus
''Deinocheirus'' ( ) is a genus of large ornithomimosaur that lived during the Late Cretaceous around 70 million years ago. In 1965, a pair of large arms, shoulder girdles, and a few other bones of a new dinosaur were first discovered in the Nemegt Formation of Mongolia. In 1970, this specimen became the holotype of the only species within the genus, ''Deinocheirus mirificus''; the genus name is Greek for "horrible hand". No further remains were discovered for almost fifty years, and its nature remained a mystery. Two more complete specimens were described in 2014, which shed light on many aspects of the animal. Parts of these new specimens had been looted from Mongolia some years before, but were repatriated in 2014. ''Deinocheirus'' was an unusual ornithomimosaur, the largest of the clade at long, and weighing . Though it was a bulky animal, it had many hollow bones which saved weight. The arms were among the largest of any bipedal dinosaur at long, with large, blunt claw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
