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Sikannisuchus
''Sikannisuchus'' is an extinct genus of large archosaur from upper Triassic (Norian stage) deposits of northeastern British Columbia, Canada. It is known from the holotype, TMP 94.382.3, a posterior portion of skull roof and from other fragmentary remains. It was found from four localities of the Pardonet Formation, near the community of Sikanni Chief. It was first named by Elizabeth L. Nicholls, Donald B. Brinkman, and Xiao-Chun Wu in 1998 and the type species is ''Sikannisuchus huskyi''. It would have reached about in length. Ichthyosaurs such as ''Macgowania ''Macgowania'' is an extinct genus of parvipelvian ichthyosaur known from British Columbia of Canada. It was a small ichthyosaur around in total body length. History of research The first specimen of ''Macgowania'' is the holotype ROM 419 ...'', '' Callawayia'' and possibly the giant shastasaurid '' Shonisaurus'', coelacanths '' Whiteia banffensis'' and possibly '' Garnbergia'', and various genera of mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archosaur
Archosauria () or archosaurs () is a clade of diapsid sauropsid tetrapods, with birds and crocodilians being the only extant taxon, extant representatives. Although broadly classified as reptiles, which traditionally exclude birds, the cladistics, cladistic sense of the term includes all living and extinct relatives of birds and crocodilians such as non-avian dinosaurs, pterosaurs, phytosaurs, aetosaurs and rauisuchians as well as many marine reptile#Extinct groups, Mesozoic marine reptiles. 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 morphology (biology), morphological ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Triassic
The Late Triassic is the third and final epoch of the Triassic Period in the geologic time scale, spanning the time between Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch and followed by the Early Jurassic Epoch. The corresponding series of rock beds is known as the Upper Triassic. The Late Triassic is divided into the Carnian, Norian and Rhaetian ages. Many of the first dinosaurs evolved during the Late Triassic, including '' Plateosaurus'', ''Coelophysis'', '' Herrerasaurus'', and '' Eoraptor''. The Triassic–Jurassic extinction event began during this epoch and is one of the five major mass extinction events of the Earth. Etymology The Triassic was named in 1834 by Friedrich von Alberti, after a succession of three distinct rock layers (Greek meaning 'triad') that are widespread in southern Germany: the lower Buntsandstein (colourful sandstone'')'', the middle Muschelkalk (shell-bearing limestone) and the upper Keuper (coloured clay). The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pardonet Formation
The Schooler Creek Group is a stratigraphic unit of Middle Triassic, Middle to Late Triassic (Ladinian to Norian) Geochronology, age in the Western Canadian Sedimentary Basin. It is present in northeastern British Columbia. It was named for Schooler Creek, a left tributary of Williston Lake, and was first described in two oil wells (Pacific Fort St. John No. 16 and Southern Production No. B-14-1) northwest of Fort St. John, British Columbia, Fort St. John, by F.H. McLearn in 1921.McLearn, F.H., 1921. Mesozoic of upper Peace River, British Columbia Geological Survey of Canada, Summary Report 1920, Part B, p. 1-6. Exposures along Williston Lake serve as a type locality (geology), type locality in outcrop. Lithology The Schooler Creek Group is composed of limestone and Dolomite (rock), dolomite, with subordinate siltstone, shale, sandstone, and evaporite minerals such as gypsum and anhydrite. Distribution The Schooler Creek Group outcrops in the foothills of the northern Canadian Roc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Triassic Archosaurs Of North America
Late or LATE may refer to: Everyday usage * Tardy, or late, not being on time * Late (or the late) may refer to a person who is dead Music * ''Late'' (The 77s album), 2000 * Late (Alvin Batiste album), 1993 * Late!, a pseudonym used by Dave Grohl on his '' Pocketwatch'' album * Late (rapper), an underground rapper from Wolverhampton * "Late", a song by Kanye West from ''Late Registration'' Other uses * Late (Tonga), an uninhabited volcanic island southwest of Vavau in the kingdom of Tonga * "Late" (''The Handmaid's Tale''), a television episode * LaTe, Oy Laivateollisuus Ab, a defunct shipbuilding company * 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, a concept in econometrics * Late, a synonym for ''cooler'' in stellar classification See also * * * ''Lates'', a genus of fish in the lates perch family * Later (other) Later may refe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Reptile Genera
Prehistory, also called pre-literary history, is the period of human history between the first known use of stone tools by hominins million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared years ago. It took thousands of years for writing systems to be widely adopted, with writing having spread to almost all cultures by the 19th century. The end of prehistory therefore came at different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. It is based on an old conception of history that without written records there could be no history. The most common conception today is that history is based on evidence, however the concept of prehistory hasn't been completely discarded. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garnbergia
''Garnbergia'' is an extinct genus of prehistoric coelacanth that lived during the Anisian stage of the Middle Triassic epoch. It was discovered by Martin and Wenz in 1984. It comprises a single species, ''Garnbergia ommata''. Classification In a 2017 phylogeny, ''Garnbergia'' has been recovered as the sister-group of all other Latimeriidae. See also * Prehistoric fish * List of prehistoric bony fish This list of prehistoric bony fish is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be bony fish (class Osteichthyes), excluding purely vernacular terms. The list includ ... References Middle Triassic fish Fossils of Germany Anisian life Anisian genus first appearances {{paleo-bony-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whiteia
''Whiteia'' is an extinct genus of prehistoric coelacanth fish which lived during the Triassic period. It is named after Errol White. Extinct animals of Indonesia Taxonomy The type species is ''Whiteia woodwardi'' from the Early Triassic of Madagascar. Other Early Triassic species are ''W. tuberculata'', ''W. uyenoteruyai'' (both Madagascar), ''W. nielseni'' (East Greenland), ''W.''? ''banffensis'' (Alberta, Canada) and ''W. africana'' (South Africa). Two species, ''W. oishii'' (West Timor, Indonesia) and ''W. gigantea'' (Texas, United States), are of Late Triassic The Late Triassic is the third and final epoch (geology), epoch of the Triassic geologic time scale, Period in the geologic time scale, spanning the time between annum, Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch a ... age. The nominal species ''Coelacanthus evolutus'' Beltan, 1980 is a junior synonym of ''Whiteia woodwardi''.. References Triassic bony fish Whiteiidae Ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shonisaurus
''Shonisaurus'' is a genus of very large ichthyosaurs. At least 37 incomplete fossil specimens of the type species, ''Shonisaurus popularis'', have been found in the Luning Formation of Nevada, USA. This formation dates to the late Carnian-early Norian age of the Late Triassic, around 227 million years ago. Other possible species of ''Shonisaurus'' have been discovered from the middle Norian deposits of Canada and Alaska. Description left, Size of ''S. popularis'' (green) and '' Shastasaurus sikanniensis'' (red) compared with a human (blue) ''Shonisaurus'' lived during the late Carnian to Norian stages of the Late Triassic. With a large skull about long, ''S. popularis'' measured around in length and in body mass. ''S. sikanniensis'' was one of the largest marine reptiles of all time, measuring long and weighing . ''Shonisaurus'' had a long snout, and its flippers were much longer and narrower than in other ichthyosaurs. While ''Shonisaurus'' was initially reported to hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shastasaurid
Shastasauridae is an extinct family of ichthyosaurs from the Late Triassic with a possible Early Jurassic record. The family contains the largest known species of ichthyosaurs, which include some of and possibly the largest known marine reptiles. Taxonomy Shastasauridae was named by American paleontologist John Campbell Merriam in 1895 along with the newly described genus ''Shastasaurus''. In 1999, Ryosuke Motani erected the clade Shastasauria to include '' Shastasaurus'', ''Shonisaurus'', and several other traditional shastasaurids, defining it as a stem-based taxon including "all merriamosaurians more closely related to '' Shastasaurus pacificus'' than to ''Ichthyosaurus communis''." He also redefined Shastasauridae as a node-based taxon including "the last common ancestor of ''Shastasaurus pacificus'' and '' Besanosaurus leptorhynchus'', and all its descendants" and Shastasaurinae, which Merriam named in 1908, as a stem taxon including "the last common ancestor of ''Shastasau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callawayia
''Callawayia'' is an extinct genus of ichthyosaur. It contains the species ''Callawayia neoscapularis''.Sander, P.M., Chen X., Cheng L. and Wang X. (2011).Short-Snouted Toothless Ichthyosaur from China Suggests Late Triassic Diversification of Suction Feeding Ichthyosaurs. ''PLoS ONE 6(5)'': e19480. History of research In 1994, Christopher McGowan reviewed the taxonomy of '' Shastasaurus''. In this publication, he named a new species of ''Shastasaurus'', ''S. neoscapularis'', based on ROM (Royal Ontario Museum) 41993, a partial skeleton discovered on the shore of Williston Lake in Pink Mountain, British Columbia, Canada in 1987. The specimen was excavated from "Flipper Quarry" in 1988. The name of this species refers to the closer resemblance of its scapulae (shoulder blades) to Jurassic ichthyosaurs than those of other Triassic ichthyosaurs. In 2000, Michael Maisch published a study on the skull anatomy of ''Shastasaurus'', and also revised the genus again. He noted that ''S. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macgowania
''Macgowania'' is an extinct genus of parvipelvian ichthyosaur known from British Columbia of Canada. It was a small ichthyosaur around in total body length. History of research The first specimen of ''Macgowania'' is the holotype ROM 41992 ( RBCM EH 91.2.5), a partial skeleton which preserved nearly complete skull, almost complete forefin and other postcranial elements. It was collected in the Jewitt Spur locality from the Pardonet Formation, dating to the middle Norian stage of the Late Triassic, about 210 million years ago. It was found on the northern shore of the Peace Reach branch of Williston Lake. A second specimen from the same locality, ROM 41991, may be referable to this genus based on its forefin structure, but this cannot be confirmed due to its poor preservation. ''Macgowania'' has a very stable position in many cladistic analyses. The family Macgowaniidae was named by McGowan and Motani in 2003 to include this genus.McGowan C, Motani R. 2003. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elizabeth Nicholls
Elizabeth (Betsy) Laura Nicholls (January 31, 1946 – October 18, 2004) was an American-Canadian paleontologist who specialized in Triassic marine reptiles. She was a paleontologist at the Royal Tyrrell Museum in Alberta, Canada. Early life and education Nicholls was born in Oakland, California, and received her undergraduate degree in 1968 from the University of California, Berkeley and her graduate degrees, an M.Sc. in 1972 and a Ph.D. in 1989, from the University of Calgary {{Infobox university , name = University of Calgary , image = University of Calgary coat of arms without motto scroll.svg , image_size = 150px , caption = Coat of arms , former ..., working under Samuel Paul Welles. Career She was the co-editor with American vertebrate paleontologist Jack Murff Callaway of the book ''Ancient Marine Reptiles''. '' Latoplatecarpus nichollsae'' was named in her honor, as was '' Nichollsemys''. N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
