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Dvinosauria
Dvinosaurs are one of several new clades of Temnospondyl amphibians named in the phylogenetic review of the group by Yates and Warren 2000. They represent a group of primitive semi-aquatic to completely aquatic amphibians, and are known from the Late Carboniferous to the Early Triassic, being most common in the Permian period. Their distinguishing characteristics are a reduction of the otic notch; the loss of a flange on the rear side of the pterygoid; and 28 or more presacral vertebrae. Trimerorhachidae is the most basal family of dvinosaurs. Most other dvinosaurs are placed in the superfamily Dvinosauroidea. Within Dvinosauroidea are two families, Eobrachyopidae and Tupilakosauridae, as well as dvinosaurs that cannot be placed in either family, such as '' Dvinosaurus'' and ''Kourerpeton''. A 2008 phylogenetic analysis found Eobrachyopidae to be paraphyletic, representing a grade of basal dvinosauroids. Below is a cladogram showing the phylogenetic relationships of dvinosa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acroplous
''Acroplous'' is an extinct genus of dvinosaurian Temnospondyli within the family Eobrachyopidae. History of study ''Acroplous'' was described by Nicholas Hotton in 1959 for the type species, ''A. vorax''. The type locality is in Riley County, Kansas within the Speiser Shale (early Permian). The original description only described the holotype (KUVP 9822), a partially disarticulated skull with isolated, associated postcrania. The genus name comes from the Greek word for 'swimming at the top,' based on Hotton's inference of the animal as being a surface cruising animal. The species name comes from the inferred voracity of the taxon. Hotton suggested that some material from the Dunkard Group of Pennsylvania that had been previously described by Romer (1952) as Saurerpeton obtusum''' might represent an Appalachian occurrence of ''Acroplous''. However, this material is not considered to belong to either ''Acroplous'' or to '' Isodectes'', the senior synonym of ''Saurerpeton,'' an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kourerpeton
''Kourerpeton'' is an extinct genus of dvinosaurian temnospondyl. Fossils of ''Kourerpeton'' were discovered in a window of a barber's shop in either Bisbee or Mesa, Arizona. ''Kourerpeton'' was named in 1976, with the type and only species being ''K. bradyi''. It was originally assigned to the monotypic family Kourerpetidae, which has been alternatively spelled Kourerpetontidae. Age and location Because it was not found ''in situ'', the provenance and age of ''Kourerpeton'' is unknown. The fossils are rumored to have been from the Glen Rose Formation near Glen Rose, Texas. Olson and Lammers (1976) discredited this idea because they noted that the Glen Rose Formation is Cretaceous in age, and therefore not a likely source for a temnospondyl. Several studies have claimed that it is Permian or Early Triassic in age. Warren (1999) suggested that ''Kourerpeton'' is from an unknown Guadalupian (Middle Permian) to Early Triassic locality in North America, or possibly even from a loc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eobrachyopidae
Eobrachyopidae is a family of dvinosaurian temnospondyl Temnospondyli (from Greek τέμνειν, ''temnein'' 'to cut' and σπόνδυλος, ''spondylos'' 'vertebra') is a diverse order of small to giant tetrapods—often considered primitive amphibians—that flourished worldwide during the Carb ...s. References Dvinosaurs Amphibian families {{Temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trimerorhachis
''Trimerorhachis'' is an extinct genus of dvinosaurian temnospondyl within the family Trimerorhachidae. It is known from the Early Permian of the southwestern United States, with most fossil specimens having been found in the Texas Red Beds. The type species of ''Trimerorhachis'', ''T. insignis'', was named by American paleontologist Edward Drinker Cope in 1878. Cope named a second species from Texas, ''T. mesops'', in 1896. The species ''T. rogersi'' (named in 1955) and ''T. greggi'' (named in 2013) are also from Texas, and the species ''T. sandovalensis'' (named in 1980) is from New Mexico. Description The length of the largest specimens of ''Trimerorhachis'' is estimated to have been almost a metre (3.3 feet) in length. ''Trimerorhachis'' has a large triangular head with upward-facing eyes positioned near the front of the skull. The trunk is long and the limbs are relatively short. The presence of a branchial apparatus indicates that ''Trimerorhachis'' had external gills ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neldasaurus
''Neldasaurus'' is an extinct genus of dvinosaurian temnospondyl within the family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ... Trimerorhachidae. References Dvinosaurs Cisuralian temnospondyls of North America Permian geology of Texas Fossil taxa described in 1965 {{temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isodectes
''Isodectes'' is an extinct genus of dvinosaurian temnospondyl within the family Eobrachyopidae. The genus ''Saurerpeton'', named in 1909, is considered to be a junior synonym The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linn ... of ''Isodectes''. References Dvinosaurs Cisuralian temnospondyls of North America Permian geology of Texas Fossil taxa described in 1896 Taxa named by Edward Drinker Cope {{temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temnospondyli
Temnospondyli (from Greek τέμνειν, ''temnein'' 'to cut' and σπόνδυλος, ''spondylos'' 'vertebra') is a diverse order of small to giant tetrapods—often considered primitive amphibians—that flourished worldwide during the Carboniferous, Permian, and Triassic periods. A few species continued into the Jurassic and Cretaceous periods. Fossils have been found on every continent. During about 210 million years of evolutionary history, they adapted to a wide range of habitats, including freshwater, terrestrial, and even coastal marine environments. Their life history is well understood, with fossils known from the larval stage, metamorphosis, and maturity. Most temnospondyls were semiaquatic, although some were almost fully terrestrial, returning to the water only to breed. These temnospondyls were some of the first vertebrates fully adapted to life on land. Although temnospondyls are considered amphibians, many had characteristics, such as scales and armour-like bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slaugenhopia
''Slaugenhopia'' is an extinct genus of dvinosaurian temnospondyl within the family Tupilakosauridae. Fossils have been found from the Early Permian San Angelo Formation in Texas. The type and only species, ''S. texensis'', was named in 1962. It may be closely related to the dvinosaur ''Kourerpeton''. ''Slaugenhopia'' was once classified as a trimerorhachid but is now classified as a tupilakosaurid. Description and history ''Slaugenhopia'' was found from the San Angelo Formation within the Kahn Quarry of Driver Ranch in Knox County, Texas. Although it was known only from fragments, paleontologist Everett C. Olson reconstructed the entire skull when he named the genus in 1962. He placed the genus in the dvinosaur family Trimerorhachidae and thought that it was intermediate between the dvinosaurs ''Trimerorhachis'' and ''Dvinosaurus'' based on the shape of the skull. A mandible that was found earlier in Little Croton Creek was also referred to ''Slaugenhopia''. ''Slaugenhopia' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tupilakosaurus
''Tupilakosaurus'' is an extinct genus of dvinosaurian temnospondyl within the family Tupilakosauridae. Two species are known: *''Tupilakosaurus heilmani'' Nielsen, 1954 — Wordie Creek Formation, Greenland *''Tupilakosaurus wetlugensis'' Shishkin, 1961 — Vokhma and Kopanskaya Formation, Nizhny Novgorod Oblast, Russia See also * Prehistoric amphibian * List of prehistoric amphibians This list of prehistoric amphibians is an attempt to create a comprehensive listing of all genera from the fossil record that have ever been considered to be amphibians, excluding purely vernacular terms. The list includes all commonly accepted g ... References Dvinosaurs Induan genera Triassic temnospondyls of Europe Fossils of Greenland Triassic Greenland Fossil taxa described in 1954 {{triassic-animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perryella
''Perryella'' is an extinct genus of dvinosaurian(?) temnospondyl from the Permian of Oklahoma. History of study The type and only species, ''P. olsoni'', was named in 1987 from the Wellington Formation exposures of Noble County, Oklahoma, which is Early Permian in age. It is known from several skulls and partial remains of vertebrae and limbs. The genus name is for the nearby town of Perry, Oklahoma. The specific name honors the American paleontologist Everett C. Olson. A subsequent study by Ruta & Bolt (2006) was based on the further preparation of the cranial material in particular. Anatomy ''Perryella'' has a melange of different features, which contributes to uncertainty regarding its phylogenetic position (see below). It has proportionately large orbits and interpterygoid vacuities and a well-developed otic notch. Ruta & Bolt (2006) listed an extensive number of features that contribute to a unique combination of features, such as a frontal entering the orbit; orbi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trimerorhachidae
Trimerorhachidae is a family of dvinosaurian temnospondyls, including Trimerorhachis and Neldasaurus. They are vertebrates and carnivores. Gallery Trimerorhachis insignis life restoration.jpg, '' Trimerorhachis insignis'', of the early Permian of Texas Neldasaurus wrightae.jpg, '' Neldasaurus wrightae'', of the early Permian of Texas Procuhy nazariensis (cropped).jpg, '' Procuhy nazariensis'', of the early Permian of Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ... References Dvinosaurs Amphibian families {{Temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thabanchuia
''Thabanchuia'' is an extinct genus of dvinosaurian temnospondyl within the family Tupilakosauridae. It is known from the Lystrosaurus Assemblage Zone in Thaba N'chu, Free State, South Africa. The genus contains just one species, ''Thabanchuia oomie'', the type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen( .... See also * Prehistoric amphibian * List of prehistoric amphibians References Dvinosaurs Triassic amphibians Early Triassic amphibians of Africa Fossil taxa described in 1998 {{triassic-animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
