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Minimocursor
''Minimocursor'' (meaning "smallest runner") is a genus of basal neornithischian dinosaur from the Late Jurassic Phu Kradung Formation of Thailand. The type species is ''Minimocursor phunoiensis''. Discovery and naming The holotype specimen, PRC 150, was excavated in 2012 and prepared for the next five years. It consists of a postcranial specimen that is more than 50% complete. Other referred specimens include an isolated dentary briefly described in 2014 and pes material. Several more specimens remain unprepared as of 2023. These bones were considered to represent a new genus and species, ''Minimocursor phunoiensis'', in 2023. The Genus, generic name, "''Minimocursor''", combines the Latin words "minimus", meaning "the smallest", in reference to the holotype's small size, and "cursor", meaning "runner". The Specific name (zoology), specific name, "''phunoiensis''", refers to the excavation site, Phu Noi. Description The not-fully-grown holotype has been estimated as long ... [...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] |
Neornithischia
Neornithischia ("new ornithischians") is a clade of the dinosaur order Ornithischia. It is the sister group of the Thyreophora within the clade Genasauria. Neornithischians are united by having a thicker layer of asymmetrical enamel on the inside of their lower teeth. The teeth wore unevenly with chewing and developed sharp ridges that allowed neornithischians to break down tougher plant food than other dinosaurs. Neornithischians include a variety of basal forms historically known as "hypsilophodonts", including the Thescelosauridae. As these taxa do not all form a monophyletic clade, the term 'small-bodied early diverging ornithischian' (SBEDO) has been used to refer to these as a collective group. In addition, there are derived forms classified in the groups Marginocephalia and Ornithopoda. The former includes clades Pachycephalosauria and Ceratopsia, while the latter typically includes ''Hypsilophodon'' and the more derived Iguanodontia. Classification Neornithischia was f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cerapoda
Neornithischia ("new ornithischians") is a clade of the dinosaur order Ornithischia. It is the sister group of the Thyreophora within the clade Genasauria. Neornithischians are united by having a thicker layer of asymmetrical enamel on the inside of their lower teeth. The teeth wore unevenly with chewing and developed sharp ridges that allowed neornithischians to break down tougher plant food than other dinosaurs. Neornithischians include a variety of basal forms historically known as " hypsilophodonts", including the Thescelosauridae. As these taxa do not all form a monophyletic clade, the term 'small-bodied early diverging ornithischian' (SBEDO) has been used to refer to these as a collective group. In addition, there are derived forms classified in the groups Marginocephalia and Ornithopoda. The former includes clades Pachycephalosauria and Ceratopsia, while the latter typically includes ''Hypsilophodon'' and the more derived Iguanodontia. Classification Neornithischia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phu Kradung Formation
The Early Cretaceous Phu Kradung Formation is the lowest member of the Mesozoic Khorat Group which outcrops on the Khorat Plateau in Isan, Thailand. This geological formation consists of micaceous, brown to reddish-brown siltstone beds with minor brown and grey shale and sandstone beds. Occasional lime-noduled conglomerate occurs.Suteetorn and Jarnyahran (1986). "Geological Map of Thailand 1:250,000, Sheet NE 48-14 (Roi Et). The Phu Kradung Formation sediments were deposited in a lake-dominated floodplain cut by meandering and occasionally braided river channels.Racey and Goodall (2009). "Late Palaeozoic and Mesozoic Ecosystems in SE Asia". Geological Society. London. Special Publication 315 Pp 69-84. The Phu Kradung Formation is considered, on the basis of recent vertebrae fossil discoveries, to be Late Jurassic in age. However, new palynology and biostratigraphic data suggests an age of Early Cretaceous for the upper section. More recent datations trought detrital zircon U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Jurassic
The Late Jurassic is the third Epoch (geology), epoch of the Jurassic Period, and it spans the geologic time scale, geologic time from 161.5 ± 1.0 to 143.1 ± 0.8 million years ago (Ma), which is preserved in Upper Jurassic stratum, strata.Owen 1987. In European lithostratigraphy, the name "Malm" indicates rocks of Late Jurassic age. In the past, ''Malm'' was also used to indicate the unit of geological time, but this usage is now discouraged to make a clear distinction between lithostratigraphic and geochronologic/chronostratigraphic units. Subdivisions The Late Jurassic is divided into three ages, which correspond with the three (faunal) stages of Upper Jurassic rock: Paleogeography During the Late Jurassic Epoch, Pangaea broke up into two supercontinents, Laurasia to the north, and Gondwana to the south. The result of this break-up was the emergence of the Atlantic Ocean, which initially was relatively narrow. Life forms This epoch is well known for many famous types of d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kulindadromeus By Tom Parker
''Kulindadromeus'' is a genus of Basal (phylogenetics), basal neornithischian dinosaur that lived during the Middle Jurassic. The first ''Kulindadromeus'' fossil was found in Russia. Its feather-like integument is evidence for protofeathers being basal to Ornithischia and possibly Dinosaur, Dinosauria as a whole, rather than just to Coelurosauria, as previously suspected. Discovery and naming In 2014, the type species ''Kulindadromeus zabaikalicus'' was named and described by Pascal Godefroit, Sofia Sinitsa, Danielle Dhouailly, Yuri Bolotsky, Alexander Sizov, Maria McNamara, Michael Benton, and Paul Spagna. The generic name is derived from the Kulinda sites and Classical Greek δρομεύς, ''dromeus'', "runner". The specific name (zoology), specific name refers to the Zabaykalsky Krai. The holotype, INREC K3/109, was found in a layer of the Ukureyskaya Formation dating from the Middle to Late Jurassic, Bajocian-Tithonian, with the specific bed likely dating to the Bathonian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jeholosaurus
''Jeholosaurus'' is a genus of neornithischian dinosaur from the Early Cretaceous Period. It is thought to have been a herbivorous small ornithopod. History of discovery The first two ''Jeholosaurus'' specimens were found in 2000 at Lujiatun near Beipiao City, Liaoning Province, China, and named and described the same year by Xu Xing, Wang Xioalin and You Hailu. The type and only known species is ''Jeholosaurus shangyuanensis''. The generic name ''Jeholosaurus'' means "lizard from Jehol"; Jehol is the name of a historical province situated in western Liaoning and northern Hebei. The specific name refers to the geographical area of Shangyuan where the fossil site is located. The type specimen of ''Jeholosaurus'', on which the genus is based, is IVPP V 12529. It was found in a layer of the early Yixian Formation, dating from the Barremian, about 126-124 million years old. The layers consist of fluvial sandstone interspersed with tuff and it is thought that an en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yueosaurus
''Yueosaurus'' is an extinct genus of basal neornithischian dinosaur known from Zhejiang Province, China. Description ''Yueosaurus'' is known only from the holotype ZMNH M8620, an articulated, partial but well preserved postcranial skeleton which includes cervical, dorsal (back) and caudal vertebrae, scapula, rib, hip bones, partial forelimb and partial hindlimb. It was collected in Tiantai locality from the Liangtoutang Formation, dating to the Albian-Cenomanian stages of the latest Early Cretaceous and the earliest Late Cretaceous. ''Yueosaurus'' represents the southernmost basal ornithopod dinosaur from Asia, and the first one from China. It differs from other ornithischians by a combination of characters. Han ''et al.'' found it plausible that ''Yueosaurus'' might be a member of Jeholosauridae or closely related to it. Etymology ''Yueosaurus'' was first named by Wenjie Zheng, Xingsheng Jin, Masateru Shibata, Yoichi Azuma and Fangming Yu in 2012 and the type speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yandusaurus Reconstruction
''Yandusaurus'' is a genus of herbivorous basal neornithischian dinosaur from the Bathonian age (middle Jurassic, approximately 168 to 162 Ma) of China. Discovery and naming In January 1973 the Museum of the Salt Industry at Zigong in Sichuan was warned that during construction activities with a composter at Jinzidang near the Honghe dam inadvertently a dinosaur skeleton had been processed. A team of the museum managed to salvage some heavily damaged remains. Though locally this animal was at first referred to as "Yubasaurus" or "Honghesaurus", in 1979 Beijing professor He Xinlu named and described it as the type species ''Yandusaurus hongheensis''. The generic name is derived from ''Yandu'', the ancient name for Zigong. This name is a contraction of ''yan'', "salt", and ''du'', "capital", occasioned by the fact that Zigong was historically the centre of Chinese salt mining. In this way ''Yandusaurus'' indirectly also refers to the Salt Museum. The specific name refers to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
