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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] |
Tambach Formation
The Tambach Formation is an Early Permian-age geologic formation in central Germany. It consists of red to brown-colored sedimentary rocks (red beds) such as conglomerate, sandstone, and mudstone, and is the oldest portion of the Upper Rotliegend within the Thuringian Forest Basin. The overall geology records a history with three distinct stages of sedimentation within a mountainous environment. First, tectonic activity forms a basin (the Tambach Basin) dominated by high-energy debris flows, sheetfloods, and braided rivers. These incise underlying rhyolitic rock, depositing a coarse conglomerate known as the Bielstein Conglomerate. Second, calmer conditions allow the basin to widen, and the conglomerate is marginalized by finer sediments which were previously only common at the center of the basin, such as the characteristic Tambach Sandstone. These finer sediments were deposited through repeated sequences of flooding, followed by calm water, followed by exposure to air. The ov ... [...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] |
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] |
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] |
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] |
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 genus a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2008 In Paleontology
Protozoa New taxa Plants Angiosperms Monocots Arthropoda Arachnids Insects Xiphosurans Fishes Bony fish Placoderms General research *Hilton & Grande redescribe the fossil mooneyes of western North America synonymizing the genus ''Eohiodon'' with ''Hiodon''. *Cicimurri, Paris, & Everhart describe a partial dentition from a Holocephali chimaeroid fish found in the Niobrara Chalk. Amphibians Jenkins, F. A., jr, Shubin, N. H., Gatesy, S. M., and Warren, A., 2008, Gerrothorax pulcherrimus from the Upper Triassic Fleming Fjord Formation of East Greenland and a reassessment of head lifting in temnospondyl feeding: Journal of Vertebrate Paleontology, v. 28, n. 4, p. 935-950. Newly named amphibians Archosaurs Newly named pseudosuchians Newly named pterosaurs Dinosaurs * Oviraptorosaurian eggs with embryonic skeletons are discovered for the first time in China. * Mongolian Late Jurassic theropod fossils are found for the first time. * A new study on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permian Germany
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 amphibian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permian Temnospondyls Of Europe
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 amphibian ... [...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] |
Pasawioops
''Pasawioops'' is an extinct genus of early Permian dissorophoid temnospondyl within the clade Amphibamiformes. History of study ''Pasawioops'' was first described from the early Permian fissure fills near Richards Spur in Comanche County, Oklahoma. It is known from three skulls from this locality. The holotype is a complete skull (reposited at the Sam Noble Oklahoma Museum of Natural History MNH, while the referred specimens are larger but more incomplete partial skulls (one at the OMNH and the other at the Field Museum). The taxon is also known from one specimen from the early Permian of Texas (reposited at the Museum of Comparative Zoology), being previously misidentified as a specimen of ''Tersomius texensis''. Anatomy ''Pasawioops'' has a relatively long and slender skull for an amphibamiform, with the posterior skull table not abbreviated as in more derived taxa. A tooth-bearing crest is found along the cultriform process, and the pterygoid bears two ridges of teeth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
