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Deltasaurus
''Deltasaurus'' is an extinct genus of Carnian temnospondyl amphibian of the family Rhytidosteidae. Taxonomy The genus was erected in 1965 by John W. Cosgriff, when describing two new species discovered northwest Australia. The author recognised an affinity with other genera allied to the family Rhytidosteidae that had been uncovered in Africa, and proposed their arrangement to a new superfamily Rhytidosteoidea. It is the most common animal fossil of the Blina Shale, a fossil deposit at the eastern end of the Erskine Range in the Kimberley region of Western Australia. A specimen has also been collected from the Knocklofty Sandstone deposit in Tasmania. The genus places two fossil taxa, '' Deltasaurus kimberleyensis'', the type species which grew to around 90 centimetres in length, and '' Deltasaurus pustulatus'', also described by Cosgriff in 1965. The genus has been variously placed in subsequent arrangements, at one time as a familia Derwentiidae that separated the Au ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deltasaurus Kimberleyensis 5
''Deltasaurus'' is an extinct genus of Carnian temnospondyl amphibian of the family Rhytidosteidae. Taxonomy The genus was erected in 1965 by John W. Cosgriff, when describing two new species discovered northwest Australia. The author recognised an affinity with other genera allied to the family Rhytidosteidae that had been uncovered in Africa, and proposed their arrangement to a new superfamily Rhytidosteoidea. It is the most common animal fossil of the Blina Shale, a fossil deposit at the eastern end of the Erskine Range in the Kimberley region of Western Australia. A specimen has also been collected from the Knocklofty Sandstone deposit in Tasmania. The genus places two fossil taxa, ''Deltasaurus kimberleyensis'', the type species which grew to around 90 centimetres in length, and '' Deltasaurus pustulatus'', also described by Cosgriff in 1965. The genus has been variously placed in subsequent arrangements, at one time as a familia Derwentiidae that separated the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deltasaurus Kimberleyensis
''Deltasaurus kimberleyensis'' was a temnospondyl amphibian of the family Rhytidosteidae that existed during the Carnian stage of the Triassic. The fossilised remains were discovered in the Blina Shale formation in the Kimberley region of northwest Australia in 1965. Taxonomy The description of ''Deltasaurus kimberleyensis'' by J. W. Cosgriff was published in 1964, nominating this as the type species when establishing the genus and providing the description for a second species, '' Deltasaurus pustulatus'', in the material obtained in Blina Shale in the Kimberley region of northwest Australia. The holotype material is fossil material in shale of a partial skull, the skull roof and its impression with a remaining fragment of the palate, Paratypes included more fragmented material revealing other details including skull, clavicle, and jaw fossils that were also attributed to the new species. Description A common species of ''Deltasaurus'', smaller than the other known speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deltasaurus Pustulatus
''Deltasaurus pustulatus'' is an amphibian fossil species of the family Rhytidosteidae. The temnospondyl hunted invertebrates and fish during the late stage Triassic epoch, and somewhat resembles the only other species of the eastern Gondwanan genus ''Deltasaurus''. The only known evidence of the species was discovered in a drill core in Southwest Australia, near Geraldton, a seemingly improbable event that produced the only known example of Triassic vertebrate fauna in the ecologically exceptional region's Kockatea Formation. Taxonomy The description of ''Deltasaurus pustulatus'' was published in 1965 by John W. Cosgriff, recognised as a second species of a new genus. The type species, described in the same study, was found at Blina Shale in the northwest of Australia, whereas this species described fossil material obtained from the Kockatea Formation in the southwest of the continent, near Geraldton, Western Australia. The type locality of ''D. pustulatus'' is named Beag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of Western Australia
The Amphibians of Western Australia are represented by two families of frogs. Of the 78 species found, most within the southwest, 38 are unique to the state. 15 of the 30 genera of Australian frogs occur; from arid regions and coastlines to permanent wetlands. Frog species in Western Australia have not suffered the major declines of populations and diversity of many parts of the world. No species is recorded as having become extinct, despite over 50% of recent worldwide extinctions being Australian. Three species are listed as Threatened, two as Vulnerable and '' Geocrinia alba'' as Critically endangered. Threats to the species include the fungal disease Chytridiomycosis, though no infection has yet been recorded, and damage to habitat from altered land use and fire regimes. These processes have caused decline in many populations, however, some have successfully colonized newly created habitats such as dams or suburban gardens. Species such as '' Litoria moorei'' (Motorbik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhytidosteoidea
Rhytidosteoidea is a superfamily of 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 Carb ..., early amphibian species that existed during the Carboniferous, Permian, and Triassic periods. The taxon was established in 1965 to accommodate two new species of '' Deltasaurus'', the author recognising an alliance with previously described genera. References * Further reading * * * External linksRhytidosteoiea at Mikko's Phylogeny Archive. Trematosaurs {{Temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blina Shale
Blina Shale is a fossil bearing geological formation located in the Kimberley region of Northwest Australia. The location is rich in deposits of vertebrate material, and the site of previously unknown Triassic species. Flora and invertebrate species have also been identified in the deposits, including microplankton and microflora. Description The site is located near Derby, Western Australia. The shale bed extends inland from King Sound at the coast, forming claypans where it is rarely exposed, with exploratory drilling indicating it is between thick. The upper parts of the bed are finer layers sediments; these are evident in some ridges of the Erskine range. As with the Kockatea Shale in the same region, the bed was formed by deposition in marine environs and at river deltas and estuaries. The palaeontological significance of the area was recognised in a geological survey of a region known a Fitzroy Trough in 1953, and examination by Brunnschweiler in 1954 determined the age t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indobrachyops
''Indobrachyops'' is an extinct genus of temnospondyl amphibian from the Early Triassic of India. It is known from a nearly complete fossil skull that was first described by paleontologists Friedrich von Huene and M. R. Sahni in 1958 from the Panchet Formation in Raniganj Coalfield. ''Indobrachyops'' belongs to a group of mostly semi-aquatic temnospondyls called Stereospondyli, but its exact placement within the group has been uncertain since its first description. Classification Huene and Sahni considered ''Indobrachyops'' to be part of the family Brachyopidae, which includes several aquatic temnospondyls with large rounded heads. However, later studies noted several features of ''Indobrachyops'' that set it apart from brachyopids, including closely spaced nostrils and a different pattern of pits and grooves on the skull roof. In 1979, J. W. Cosgriff and J. M. Zawiskie placed ''Indobrachyops'' in a new family called Indobrachyopidae along with the poorly known temnospondyls ''Mah ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhytidosteidae
Rhytidosteidae is a family of Temnospondyli that lived in the Permian and Triassic. Phylogeny Below is a cladogram A cladogram (from Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an evolutionary tree because it does not show how ancestors are related to ... from Dias-da-Silva and Marsicano (2011): References *Yates, AM (2000), A new tiny rhytidosteid (Temnospondyli: Stereospondyi) from the Early Triassic of Australia and the possibility of hidden temnospondyl diversity. J. Vert Paleontol. 20:484-489. External linksRhytidosteidae at Palaeos. Stereospondyls Permian temnospondyls Triassic temnospondyls Amphibian families Lopingian first appearances Early Triassic extinctions {{Temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arcadia Myriadens
''Arcadia'' is an extinct genus of temnospondyl amphibians in the family Rhytidosteidae from the early Triassic. The remains were found in and named after the Arcadia Formation of Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma .... See also * Prehistoric amphibian * List of prehistoric amphibians References Triassic temnospondyls of Australia Fossil taxa described in 1985 {{temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derwentia Warreni
''Derwentia'' is the scientific name of two genera of organisms and may refer to: * ''Derwentia'' (amphibian), a genus of prehistoric amphibians in the family Rhytidosteidae * ''Derwentia'' (plant), a genus of plants in the family Plantaginaceae {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stereospondyls
The Stereospondyli are a group of extinct Temnospondyli, temnospondyl amphibians that existed primarily during the Mesozoic period. They are known from all seven continents and were common components of many Triassic ecosystems, likely filling a similar ecological niche to modern crocodilians prior to the diversification of pseudosuchian archosaurs. Classification and anatomy The group was first defined by Zittel (1888) on the recognition of the distinctive vertebral anatomy of the best known stereospondyls of the time, such as ''Mastodonsaurus'' and ''Metoposaurus''. The term 'stereospondylous' as a descriptor of vertebral anatomy was coined the following year by Fraas, referring to a vertebral position consisting largely or entirely of the intercentrum in addition to the neural arch. While the name 'Stereospondyli' is derived from the stereospondylous vertebral condition, there is a diversity of vertebral morphologies among stereospondyls, including the diplospondylous ('Tupil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rewana Quadricuneata
''Rewana'' is an extinct genus of prehistoric temnospondyls. Two species have been described from the Arcadia Formation of Australia. See also * Prehistoric amphibian * List of prehistoric amphibians References Stereospondyls Triassic amphibians Induan life Triassic temnospondyls of Australia Fossil taxa described in 1972 {{temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
