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Plemmyradytes
''Plemmyradytes'' is an extinct genus of dissorophoid temnospondyl from the early Permian (early Asselian stage). It is an amphibamiform from the Eskridge Formation exposures of Nebraska. The type species is ''Plemmyradytes shintoni''. The genus name derives from the Greek ''plemmyris'' ('tide' or 'wave') and ''dytes'' ('diver'), while the specific name honors John Shinton, a fossil preparator at the Denver Museum of Natural History where all known specimens of this taxon are reposited following collection in the late 20th century. Anatomy Huttenlocker et al. (2007) differentiated ''Plemmyradytes'' from other amphibamiforms by: (1) the reduced lateral exposure of the palatine (LEP); (2) a long and narrow supratemporal without a ventral flange; (3) a posteriorly extensive squamosal, long and slightly recurved teeth that decrease in size posteriorly; (4) a shallow dentary with a trough below the tooth row; and (5) smaller teeth on the dentary relative to the maxilla. Phylogeny ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plemmyradytes Shintoni
''Plemmyradytes'' is an extinct genus of dissorophoid temnospondyl from the early Permian (early Asselian stage). It is an amphibamiform from the Eskridge Formation exposures of Nebraska. The type species is ''Plemmyradytes shintoni''. The genus name derives from the Greek ''plemmyris'' ('tide' or 'wave') and ''dytes'' ('diver'), while the specific name honors John Shinton, a fossil preparator at the Denver Museum of Natural History where all known specimens of this taxon are reposited following collection in the late 20th century. Anatomy Huttenlocker et al. (2007) differentiated ''Plemmyradytes'' from other amphibamiforms by: (1) the reduced lateral exposure of the palatine (LEP); (2) a long and narrow supratemporal without a ventral flange; (3) a posteriorly extensive squamosal, long and slightly recurved teeth that decrease in size posteriorly; (4) a shallow dentary with a trough below the tooth row; and (5) smaller teeth on the dentary relative to the maxilla. Phylogen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tersomius
''Tersomius'' is an extinct genus of dissorophoid temnospondyl within the family Micropholidae. It is known from the early Permian of North America (Oklahoma and Texas). History of study ''Tersomius'' was first named in 1910 by American paleontologist E.C. Case based on a partial skull collected from the Archer City Formation of Texas. The type species is ''T. texensis'', in reference to its geographic provenance. The brief original description was supplemented by a lengthier redescription of the holotype and description of new material by Carroll (1964). At least two of these specimens do not belong to any species of ''Tersomius'' and were reassigned by Maddin et al. (2013), which has led some authors to consider it as a potential "wastebasket taxon." Material referred to ''Tersomius'' cf. ''texensis'' was reported from the early Permian South Grandfield locality in Oklahoma by Daly (1973). A second species of ''Tersomius'', ''T. mosesi,'' was named by Olson (1970) for Amos M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibamiformes
Amphibamiformes is an unranked clade with Dissorophoidea created by Schoch (2018). It encompasses all of the taxa traditionally considered to be "amphibamids" (subsequently restricted to '' Doleserpeton annectens'' and '' Amphibamus grandiceps'' by Schoch), branchiosaurids, and hypothetically lissamphibians under the traditional temnospondyl hypothesis of lissamphibian origins. These taxa are typically small-bodied dissorophoids and form the sister group to Olsoniformes, which comprises dissorophids and trematopids. Diagnosis (1) Palatine and ectopterygoid reduced to narrow struts; (2) interpterygoid vacuity greatly expanded laterally; (3) humerus length:waist ratio of 6:10; (4) basioccipital and supraoccipital absent. Definition The most inclusive clade containing ''Amphibamus grandiceps'' but not '' Dissorophus multicinctus''. Phylogeny Simplified phylogeny of Dissorophoidea from Schoch (2018): The phylogeny of Amphibamiformes has historically been relatively unreso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micropholidae
The Micropholidae are an extinct family of dissorophoid euskelian temnospondyls known from Late Carboniferous to Early Triassic strata in the United States and South Africa. Systematics Members of Micropholidae were historically included in Amphibamidae The Amphibamidae are an extinct family of dissorophoid temnospondyls known from Late Carboniferous-Early Permian strata in the United States. Classification Amphibamidae has traditionally included small-bodied, terrestrial dissorophoids. The n ..., but Schoch (2019) recovered Amphibamidae as paraphyletic, necessitating resurrection of Micropholidae for ''Micropholis'' and closely related taxa.Rainer R. Schoch (2018). The putative lissamphibian stem-group: phylogeny and evolution of the dissorophoid temnospondyls. Journal of Paleontology. Online edition. doi:10.1017/jpa.2018.67. References {{Taxonbar, from=Q21228222 Dissorophoids Prehistoric amphibian families Permian temnospondyls Carboniferous temnospondyls Carbon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temnospondyl
Temnospondyli (from Greek language, Greek τέμνειν, ''temnein'' 'to cut' and σπόνδυλος, ''spondylos'' 'vertebra') is a diverse order (biology), order of small to giant tetrapods—often considered Labyrinthodontia, 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 cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georgenthalia
''Georgenthalia'' is an extinct genus of dissorophoid temnospondyl from the Lower Permian. It is an amphibamid which lived in what is now the Thuringian Forest of central Germany. It is known from the holotype MNG 11135, a small, complete skull. It was found in the Bromacker locality of the Tambach Formation. It was first named by Jason S. Anderson, Amy C. Henrici, Stuart S. Sumida, Thomas Martens and David S. Berman in 2008 and the type species is ''Georgenthalia clavinasica''. Phylogeny 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 d ... after Fröbisch and Reisz, 2008: References Amphibamids Dissorophids Permian temnospondyls of Europe Permian Germany Fossil taxa described in 2008 Prehistoric amphibian genera {{Permian-animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lower Permian
The Cisuralian is the first series/epoch of the Permian. The Cisuralian was preceded by the Pennsylvanian and followed by the Guadalupian. The Cisuralian Epoch is named after the western slopes of the Ural Mountains in Russia and Kazakhstan and dates between 298.9 ± 0.15 – 272.3 ± 0.5 Mya. The Cisuralian is often synonymous with the informal terms early Permian or lower Permian. It corresponds approximately with the Wolfcampian in southwestern North America. The series saw the appearance of beetles and flies and was a relatively stable warming period of about 21 million years. Name and background The Cisuralian is the first series or epoch of the Permian. The Cisuralian was preceded by the last Pennsylvanian epoch (Gzhelian) and is followed by the Permian Guadalupian Epoch. The name "Cisuralian" was proposed in 1982, and approved by the International Subcommission on Permian Stratigraphy in 1996. The Cisuralian Epoch is named after the western slopes of the Ural Mountain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibamus
''Amphibamus'' is a genus of amphibamid temnospondyl amphibians from the Carboniferous (middle Pennsylvanian) of North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car .... This animal is considered to have been close to the ancestry of modern amphibians. Its length was about 20 cm. Gallery Image:Amphibamus.jpg, ''Amphibamus grandiceps'' skeleton References Amphibamids Dissorophids Carboniferous temnospondyls of North America Taxa named by Edward Drinker Cope Fossil taxa described in 1865 Prehistoric amphibian genera {{Temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permian Geology Of Nebraska
The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.9 Mya. It is the last period of the Paleozoic Era; the following Triassic Period belongs to the Mesozoic Era. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison, who named it after the region of Perm in Russia. The Permian witnessed the diversification of the two groups of amniotes, the synapsids and the sauropsids (reptiles). The world at the time was dominated by the supercontinent Pangaea, which had formed due to the collision of Euramerica and Gondwana during the Carboniferous. Pangaea was surrounded by the superocean Panthalassa. The Carboniferous rainforest collapse left behind vast regions of desert within the continental interior. Amniotes, which could better cope with these drier conditions, rose to dominance in place of their amphib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cisuralian Temnospondyls Of North America
The Cisuralian is the first series/epoch of the Permian. The Cisuralian was preceded by the Pennsylvanian and followed by the Guadalupian. The Cisuralian Epoch is named after the western slopes of the Ural Mountains in Russia and Kazakhstan and dates between 298.9 ± 0.15 – 272.3 ± 0.5 Mya. The Cisuralian is often synonymous with the informal terms early Permian or lower Permian. It corresponds approximately with the Wolfcampian in southwestern North America. The series saw the appearance of beetles and flies and was a relatively stable warming period of about 21 million years. Name and background The Cisuralian is the first series or epoch of the Permian. The Cisuralian was preceded by the last Pennsylvanian epoch (Gzhelian) and is followed by the Permian Guadalupian Epoch. The name "Cisuralian" was proposed in 1982, and approved by the International Subcommission on Permian Stratigraphy in 1996. The Cisuralian Epoch is named after the western slopes of the Ural Mountain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dissorophids
Dissorophidae is an extinct family of medium-sized, temnospondyl amphibians that flourished during the late Carboniferous and early Permian periods. The clade is known almost exclusively from North America. History of study Dissorophidae is a diverse clade that was named in 1902 by George A. Boulenger. Junior synonyms include Otocoelidae, Stegopidae, and Aspidosauridae. Early in the study of dissorophoids when the relationships of different taxa were not well-resolved and most taxa had not been described, Dissorophidae sometimes came to include taxa that are now not regarded as dissorophids and may have excluded earlier described taxa that are now regarded as dissorophids. Amphibamiforms were widely regarded as small-bodied dissorophids, and at one point, Dissorophidae was also suggested to also include Trematopidae. 19th century In 1895, American paleontologist Edward Drinker Cope named ''Dissorophus'' from the early Permian of Texas. This was the first dissorophid to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibamids
The Amphibamidae are an extinct family of dissorophoid temnospondyls known from Late Carboniferous- Early Permian strata in the United States. Classification Amphibamidae has traditionally included small-bodied, terrestrial dissorophoids. The name is attributed to Moodie (1909), but it was rarely used because it originally referred only to ''Amphibamus''. Similar monogeneric families were also erected for other small, terrestrial dissorophoids (e.g., Doleserpetontidae), and most of the taxa now recognized as amphibamiforms were placed within the Dissorophidae. Clack & Milner (1993) revived the Amphibamidae to include ''Amphibamus, Platyrhinops, Doleserpeton,'' and ''Tersomius'.'' Daly (1994) further expanded the composition of the Amphibamidae to include the newly described ''Eoscopus'' as well as the Early Triassic form ''Micropholis''. She suggested that the micromelerpetids were also amphibamids, which has not been validated by more recent workers. Subsequent phylogenetic w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
