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Cristian Sidor
Christian Alfred Sidor is an American vertebrate paleontologist. He is currently a Professor in the Department of Biology, University of Washington in Seattle, as well as Curator of Vertebrate Paleontology and Associate Director for Research and Collections at the Burke Museum of Natural History and Culture. His research focuses on Permian and Triassic tetrapod evolution, especially on therapsids. Academic and professional background Sidor received a B.S. (with honors) in biology from Trinity College in 1994. He went on to pursue his graduate studies at the University of Chicago, completing his M.S. in 1996 and his Ph.D. in 2000 under the supervision of James Hopson. Sidor won the Romer Prize in 2001 for his doctoral work, a competitive annual award at the Society of Vertebrate Paleontology annual meeting for the best predoctoral student oral presentation. Following his dissertation, Sidor held a postdoctoral fellowship at the National Museum of Natural History (2001) before beco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Washington
The University of Washington (UW, simply Washington, or informally U-Dub) is a public research university in Seattle, Washington. Founded in 1861, Washington is one of the oldest universities on the West Coast; it was established in Seattle approximately a decade after the city's founding. The university has a 703 acre main campus located in the city's University District, as well as campuses in Tacoma and Bothell. Overall, UW encompasses over 500 buildings and over 20 million gross square footage of space, including one of the largest library systems in the world with more than 26 university libraries, art centers, museums, laboratories, lecture halls, and stadiums. The university offers degrees through 140 departments, and functions on a quarter system. Washington is the flagship institution of the six public universities in Washington state. It is known for its medical, engineering, and scientific research. Washington is a member of the Association of American Univ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibian
Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthodontosaurus
''Opisthodontosaurus'' is an extinct genus of captorhinid reptile from the Early Permian of Oklahoma. The type species ''Opisthodontosaurus carrolli'' was named in 2015 on the basis of several articulated skeletons from the Dolese Brothers Limestone Quarry near Richards Spur. Before the description of these skeletons, the jaws and teeth of ''Opisthodontosaurus carrolli'' were thought to belong to a species of lepospondyl amphibian called '' Euryodus primus''. Although captorhinid reptiles and lepospondyl amphibians are distantly related, the two species show a remarkable degree of evolutionary convergence in their dental anatomy. Both were likely durophagous Durophagy is the eating behavior of animals that consume hard-shelled or exoskeleton bearing organisms, such as corals, shelled mollusks, or crabs. It is mostly used to describe fish, but is also used when describing reptiles, including fossil t ..., eating hard-shelled invertebrates. References Permian reptiles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mupashi
''Mupashi'' is an extinct monotypic genus of therocephalians that lived during the Late Permian Late may refer to: * LATE, an acronym which could stand for: ** Limbic-predominant age-related TDP-43 encephalopathy, a proposed form of dementia ** Local-authority trading enterprise, a New Zealand business law ** Local average treatment effect, ... of what is now Zambia. It was relatively small-bodied and had a long snout with a high tooth count compared to most other therocephalians. The size of its sclerotic ring suggests that it was adapted to be active in low-light conditions. References Therocephalia genera Monotypic prehistoric animal genera Permian synapsids of Africa Fossils of Zambia Fossil taxa described in 2016 {{paleo-therapsid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wantulignathus
''Wantulignathus'' is genus of biarmosuchian therapsid from the Madumabisa Mudstone Formation, Zambia Zambia (), officially the Republic of Zambia, is a landlocked country at the crossroads of Central, Southern and East Africa, although it is typically referred to as being in Southern Africa at its most central point. Its neighbours are .... It is known from fragmentary lower jaws and ribs. References Biarmosuchians Prehistoric therapsid genera Guadalupian synapsids of Africa Lopingian synapsids of Africa Fossil taxa described in 2016 {{paleo-therapsid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teleocrater Rhadinus
''Teleocrater'' (meaning "completed basin", in reference to its closed acetabulum) is a genus of avemetatarsalian archosaur from the Middle Triassic Manda Formation of Tanzania. The name was coined by English paleontologist Alan Charig in his 1956 doctoral dissertation, but was only formally published in 2017 by Sterling Nesbitt and colleagues. The genus contains the type and only species ''T. rhadinus''. Uncertainty over the affinities of ''Teleocrater'' have persisted since Charig's initial publication; they were not resolved until Nesbitt ''et al.'' performed a phylogenetic analysis. They found that ''Teleocrater'' is most closely related to the similarly enigmatic ''Yarasuchus'', ''Dongusuchus'', and ''Spondylosoma'' in a group that was named the Aphanosauria. Aphanosauria was found to be the sister group of the Ornithodira, the group containing dinosaurs and pterosaurs. A carnivorous quadruped measuring long, ''Teleocrater'' is notable for its unusually long neck vertebrae. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctanax
''Antarctanax'' is a genus of basal archosauriform that during the Triassic lived in Antarctica. The type species is ''Antarctanax shackletoni''. It was a reptile around the size of an iguana. Discovery and naming During a paleontological expedition to the Transantarctic Mountains in 2010 and 2011, a small skeleton was discovered at the Graphite Peak. In 2019, the type species ''Antarctanax shackletoni'' was named and described by Brandon Robert Peecook, Roger Malcolm Harris Smith and Christian Alfred Sidor. The generic name combines a reference to Antarctica — itself derived from Greek ''anti'', "opposite of", and ''arktikos'', "of the Bear" — with a Greek ''anax'', "ruler", a reference to the Archosauria, the "Ruling Reptiles". The specific name honours Ernest Shackleton, the polar explorer who named the Beardmore Glacier which runs along the Graphite Peak. The holotype, UWBM 95531, was found in a layer of the lower Fremouw Formation, which dates to the Early Triass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laosuchus
''Laosuchus'' is an extinct genus of chroniosuchian known from the Permian-Triassic boundary of Asia. Two species have been named. Discovery ''L. naga'' was found in the Luang Prabang Basin of Northern Laos, part of the Indochina block. The site was first discovered by J. B. H. Counillon in 1896 as part of the Pavie's third Mission. Counillon was tasked with mapping mineral resources for the French colonial empire. ''L. naga'' was discovered during a 2005 expedition to the area, along with remains of dicynodonts. It was later described by Arbez, Sidor, and Steyer in 2018. Its name comes from the Nāga, a snake-like deity that appears in multiple east Asian religions. In 2021 a new species ''L. hun'' was described from the Naobaogou Formation of the Daqing Mountains of Inner Mongolia, China. Description ''Laosuchus naga'' is represented by a single skull and articulated left hemimandible designated as specimen MDS-LPQ 2005-09, stored at the Musée des Dinosaures in Savannak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancistronychus
''Ancistronychus'' is an extinct genus of drepanosaur from the Late Triassic Petrified Forest National Park in the Chinle Formation of Arizona. The type and only known species is ''Ancistronychus paradoxus'', from Ancient Greek to mean "unexpected fishhook claw" due to its characteristic hooked shape. ''Ancistorhynchus'' is only known from a collection of isolated large claws from its second fingers, a distinctive trait of other derived drepanosaurs. ''Ancistorhynchus'' is characteristic amongst drepanosaurs by the strongly hooked shape of its claw, which is shorter in height and broader than those of ''Drepanosaurus'', and is flat at its tip. The claw is also cleft at its tip, a trait found in living animals that use their claws for digging, such as moles and pangolins Pangolins, sometimes known as scaly anteaters, are mammals of the order Pholidota (, from Ancient Greek ϕολιδωτός – "clad in scales"). The one extant family, the Manidae, has three genera: '' Mani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Vertebrate Paleontology
The ''Journal of Vertebrate Paleontology'' is a bimonthly peer-reviewed scientific journal that was established in 1980 by Jiri Zidek (University of Oklahoma). It covers all aspects of vertebrate paleontology, including vertebrate origins, evolution, functional morphology, taxonomy, biostratigraphy, paleoecology, paleobiogeography, and paleoanthropology. The journal is published by Taylor & Francis on behalf of the Society of Vertebrate Paleontology. According to ''Journal Citation Reports'', the journal has a 2017 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as ... of 2.190. References External links * Paleontology journals Publications established in 1980 Quarterly journals English-language journals Taylor & Francis academic journals {{paleontolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avemetatarsalia
Avemetatarsalia (meaning "bird metatarsals") is a clade of diapsid reptiles containing all archosaurs more closely related to birds than to crocodilians. The two most successful groups of avemetatarsalians were the dinosaurs and pterosaurs. Dinosaurs were the largest terrestrial animals for much of the Mesozoic Era, and one group of small feathered dinosaurs (Aves, i.e. birds) has survived up to the present day. Pterosaurs were the first flying vertebrates and persisted through the Mesozoic before dying out at the Cretaceous-Paleogene (K-Pg) extinction event. Both dinosaurs and pterosaurs appeared in the Triassic Period, shortly after avemetatarsalians as a whole. The name Avemetatarsalia was first established by British palaeontologist Michael Benton in 1999. An alternate name is Panaves, or "all birds", in reference to its definition containing all animals, living or extinct, which are more closely related to birds than to crocodilians. Although dinosaurs and pterosaurs we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archosaur
Archosauria () is a clade of diapsids, with birds and crocodilians as the only living representatives. Archosaurs are broadly classified as reptiles, in the cladistic sense of the term which includes birds. Extinct archosaurs include non-avian dinosaurs, pterosaurs, and extinct relatives of crocodilians. Modern paleontologists define Archosauria as a crown group that includes the most recent common ancestor of living birds and crocodilians, and all of its descendants. The base of Archosauria splits into two clades: Pseudosuchia, which includes crocodilians and their extinct relatives, and Avemetatarsalia, which includes birds and their extinct relatives (such as non-avian dinosaurs and pterosaurs). Older definitions of the group Archosauria rely on shared morphological characteristics, such as an antorbital fenestra in the skull, serrated teeth, and an upright stance. Some extinct reptiles, such as proterosuchids and euparkeriids, possessed these features yet orig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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