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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 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doleserpeton
''Doleserpeton'' is an extinct, monospecific genus of dissorophoidean temnospondyl within the family Amphibamidae that lived during the Upper Permian, 285 million years ago. ''Doleserpeton'' is represented by a single species, ''Doleserpeton annectens'', which was first described by John R. Bolt in 1969.Sigurdsen, Trond, and John R. Bolt. "The Lower Permian Amphibamid Doleserpeton (temnospondyli: Dissorophoidea), the Interrelationships of Amphibamids, and the Origin of Modern Amphibians." Journal of Vertebrate Paleontology. 30.5 (2010): 1360-1377. Print. Fossil evidence of ''Doleserpeton'' was recovered from the Dolese Brothers Limestone Quarry in Fort Sill, Oklahoma. The genus name ''Doleserpeton'' is derived from the initial discovery site in Dolese quarry of Oklahoma and the Greek root "herp-", meaning "low or close to the ground". This transitional fossil displays primitive traits of amphibians that allowed for successful adaptation from aquatic to terrestrial environments. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 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 bony ... [...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 unresol ... [...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 ... 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] |
Xerodromes
Dissorophoideans are a clade of medium-sized, temnospondyl amphibians that appeared during the Moscovian in Euramerica, and continued through to the Late Permian and the Early Triassic of Gondwana. They are distinguished by various details of the skull, and many forms seem to have been well adapted for life on land. Since 2008, Lissamphibia has been progressively widely considered part of this clade, but this position is still disputed by some authors. It is possible that the small Permo-Carboniferous Micromelerpetontidae and the large Late Permian Melosauridae may also belong in this clade. Phylogeny An extensive phylogenetic analysis of dissorophoids conducted in 2016 and 2018 found that the families Dissorophidae and Trematopidae are more closely related to each other than either is to the family Amphibamidae. Following a 2008 study, the Dissorophidae-Trematopidae clade was called Olsoniformes. Below is the cladogram from the 2018 analysis: References * Huttenlocke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dissorophoidea
Dissorophoideans are a clade of medium-sized, temnospondyl amphibians that appeared during the Moscovian in Euramerica, and continued through to the Late Permian and the Early Triassic of Gondwana. They are distinguished by various details of the skull, and many forms seem to have been well adapted for life on land. Since 2008, Lissamphibia has been progressively widely considered part of this clade, but this position is still disputed by some authors. It is possible that the small Permo-Carboniferous Micromelerpetontidae and the large Late Permian Melosauridae may also belong in this clade. Phylogeny An extensive phylogenetic analysis of dissorophoids conducted in 2016 and 2018 found that the families Dissorophidae and Trematopidae are more closely related to each other than either is to the family Amphibamidae. Following a 2008 study, the Dissorophidae-Trematopidae clade was called Olsoniformes. Below is the cladogram from the 2018 analysis: References * Huttenlocker, A ... [...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 ..., 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 Carbo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micropholis (amphibian)
''Micropholis'' (Greek mikros''' = small and '''pholis''' = scale) is an extinct genus of dissorophoid temnospondyl. Fossils have been found from the ''Lystrosaurus'' Assemblage Zone of the Karoo Basin in South Africa and are dated to the Induan (Early Triassic). Fossils have also been found from the lower Fremouw of Antarctica.''Micropholis'' is the only post-Permian dissorophoid and the only dissorophoid in what is presently the southern hemisphere and what would have been termed Gondwana during the amalgamation of Pangea. History of study ''Micropholis'' was one of the first dissorophoids to be named by English paleontologist Thomas Huxley in 1859 based on a partial skull. ''Micropholis stowii'' (properly ''Micropholis stowi'')'','' the type species, is named for George William Stow, the South African geologist and ethnologist who discovered the specimen and who proposed that it represented some extinct amphibian. English paleontologist Richard Owen later named a new ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eoscopus
''Eoscopus'' is an extinct genus of dissorophoidean euskelian temnospondyl in the family Micropholidae. It is known from Hamilton Quarry, a Late Carboniferous lagerstätte near Hamilton, Kansas. Members of Micropholidae were historically included in Amphibamidae, but Schoch (2019) recovered Amphibamidae as paraphyletic, necessitating resurrection of Micropholidae for ''Micropholis'' and closely related taxa. See also * Prehistoric amphibian * List of prehistoric amphibians This list of prehistoric amphibians is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be amphibians, excluding purely vernacular terms. The list includes all commonly accep ... References Amphibamids Dissorophids Prehistoric amphibian genera Carboniferous amphibians of North America Fossil taxa described in 1994 {{temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olsoniformes
Olsoniformes is a clade of dissorophoid temnospondyls. It includes the families Dissorophidae and Trematopidae. Most members of the clade were highly adapted to a terrestrial lifestyle. The clade was named in 2008 and is defined as the least inclusive clade containing ''Dissorophus multicinctus'' (a dissorophid) and ''Acheloma cumminsi'' (a trematopid) but not ''Amphibamus grandiceps, Micromelerpeton credneri,'' and ''Apateon pedestris''. Olsoniforms share various features such as a stout and low ilium and a thin cultriform process. Trematopids are known from the Late Carboniferous and the Early Permian of Europe and across much of North America, while dissorophids are primarily found in Early Permian deposits in the central United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated te ... [...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] |
Branchiosauridae
Branchiosauridae is an extinct family of small amphibamiform temnospondyls with external gills and an overall juvenile appearance. The family has been characterized by hundreds of well-preserved specimens from the Permo-Carboniferous of Middle Europe.Schoch, R.R. 2008. The intrarelationships and evolutionary history of the temnospondyl family branchiosauridae. Journal of Systematic Palaeontology. 6(4):409-431. Specimens represent well defined ontogenetic stages and thus the taxon has been described to display paedomorphy (perennibranchiate). However, more recent work has revealed branchiosaurid taxa that display metamorphosing trajectories.Schoch, R.R. and Frobisch, N.B. 2006. Alternative Pathways in an Extinct Amphibian Clade. Evolution. 60(7):1467-1475 The name Branchiosauridae (“Branchio” in Ancient Greek denoting gills and “saurus” meaning lizard) refers to the retention of gills. Geological/paleoenvironmental information Branchiosaurids mostly inhabited Permo-Car ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
