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Heylerosauridae
Heylerosauridae is a family of mastodonsauroid temnospondyls. It was first named in 1980 to include the genera '' Odenwaldia'' and '' Quasicyclotosaurus''. In addition to these genera, the family now includes '' Eocyclotosaurus'' and '' Yuanansuchus''. Recent phylogenetic analyses have not found a close relationship between ''Odenwaldia'' and other heylerosaurids and place it outside the family. Heylerosaurids are generally regarded as the sister taxon In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and ... of the stenotosaurids. References Triassic temnospondyls Middle Triassic first appearances Late Triassic extinctions {{temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odenwaldia
''Odenwaldia'' is an extinct genus of mastodonsauroid temnospondyl within the family Heylerosauridae. History of study ''Odenwaldia'' is only known from one species, ''O. heidelbergensis'', and was named by Morales & Kamphausen (1984). The holotype, a skull roof and counterpiece cast, were collected from the Middle Bundsandstein (Oberes Konglomerat) near Heidelberg, Germany and were first described by Wilhelm Simon in 1961, who thought that the specimen belonged to the trematosaur ''Trematosaurus''. It was then redescribed by Schoch (2008). Description The holotype is the only uncontroversial specimen of this taxon, although others have been referred to the species. ''Odenwaldia'' is diagnosed by several autapomorphies, including (1) small orbits combined with broad interorbital distance; (2) preorbital region slender, with nasals and lacrimals narrower than frontals; and (3) dermal ornament consists of small, similarly sized polygons, but no elongated ridges. In contrast t ... [...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] |
Mastodonsauroidea
The Mastodonsauroidea are an extinct superfamily of temnospondyl amphibians known from the Triassic. Fossils belonging to this superfamily have been found in North America, Greenland, Europe, Asia, and Australia. The genus '' Ferganobatrachus'' from the Jurassic of Asia was initially included in this superfamily but later reinterpreted as a brachyopid and given a new name Gobiops ''Gobiops'' is an extinct genus of temnospondyl from the Jurassic of Mongolia, China, and possibly Kyrgyzstan. The genus is represented by a single species, ''Gobiops desertus''. It was named in 1991 from the Late Jurassic Shar Teeg Beds of Mong .... ReferencesThe Paleobiology Database*& 2007 "Revision of the type material and nomenclature of ''Mastodonsaurus giganteus'' (Jaeger) (Temnospondyli) from the middle Triassic of Germany" ''Palaeontology'' 505:1245-1266 External links Vertebrate superfamilies Triassic temnospondyls Jurassic temnospondyls Early Triassic first appearances Middle J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quasicyclotosaurus
''Quasicyclotosaurus'' is an extinct genus of mastodonsauroid temnospondyl. It had a closed otic notch. 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 Capitosaurs Triassic temnospondyls of North America Fossil taxa described in 2000 Prehistoric amphibian genera {{temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Triassic
In the geologic timescale, the Middle Triassic is the second of three epochs of the Triassic period or the middle of three series in which the Triassic system is divided in chronostratigraphy. The Middle Triassic spans the time between Ma and Ma (million years ago). It is preceded by the Early Triassic Epoch and followed by the Late Triassic Epoch. The Middle Triassic is divided into the Anisian and Ladinian ages or stages. Formerly the middle series in the Triassic was also known as Muschelkalk. This name is now only used for a specific unit of rock strata with approximately Middle Triassic age, found in western Europe. Middle Triassic fauna Following the Permian–Triassic extinction event, the most devastating of all mass-extinctions, life recovered slowly. In the Middle Triassic, many groups of organisms reached higher diversity again, such as the marine reptiles (e.g. ichthyosaurs, sauropterygians, thallatosaurs), ray-finned fish and many invertebrate groups like ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Triassic
The Late Triassic is the third and final epoch (geology), epoch of the Triassic geologic time scale, Period in the geologic time scale, spanning the time between annum, Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch and followed by the Early Jurassic Epoch. The corresponding series (stratigraphy), series of rock beds is known as the Upper Triassic. The Late Triassic is divided into the Carnian, Norian and Rhaetian Geologic time scale, Ages. Many of the first dinosaurs evolved during the Late Triassic, including ''Plateosaurus'', ''Coelophysis'', and ''Eoraptor''. The Triassic–Jurassic extinction event began during this epoch and is one of the five major mass extinction events of the Earth. Etymology The Triassic was named in 1834 by Friedrich August von Namoh, Friedrich von Alberti, after a succession of three distinct rock layers (Greek meaning 'triad') that are widespread in southern Germany: the lower Buntsandstein (colourful sandstone'')'', t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocyclotosaurus
''Eocyclotosaurus'' is an extinct genus of mastodonsauroid temnospondyl from the Middle Triassic (Anisian In the geologic timescale, the Anisian is the lower stage or earliest age of the Middle Triassic series or epoch and lasted from million years ago until million years ago. The Anisian Age succeeds the Olenekian Age (part of the Lower Triassic ...). It measured over 1 metre and had a 22 cm skull. References Anisian first appearances Triassic temnospondyls of Europe Triassic temnospondyls of North America Fossil taxa described in 1970 Prehistoric amphibian genera {{temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1980 In Paleontology
Bryophytes Arthropods Insects Molluscs Newly named bivalves Archosauromorphs Newly named dinosaurs Data courtesy of George Olshevsky's dinosaur genera list. ''Note: the name LancangosaurusZhao, 1980. esozoic vertebrate-bearing beds and stratigraphy of northern Xinjinag: Report of Paleontological Expedition to Xinjiang IV.Memoirs of the Institute of Vertebrate Palaeontology and Palaeoanthropology, Academia Sinica A. 15, 1-119. is mistakenly treated as a nomen nudum synonymous with Datousaurus (because Dong et al. 1983 believed it to be conspecific with Datousaurus). However, it is actually an early spelling variant of another nomen nudum, Lancangjiangosaurus.'' Newly named birds Pterosauria Newly named pterosaurs Lepidosauromorphs Plesiosaurs * Plesiosaur gastroliths documented.Darby and Ojakangas (1980). Sanders, Manley, and Carpenter (2001), "Table 12.1" page 167. References {{Reflist * Darby, D. G. and Ojakangas, R. W.; 1980; Gastroliths from a Late Cretac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yuanansuchus
''Yuanansuchus'' is an extinct genus of mastodonsauroid temnospondyl. Fossils have been found from the Xinlingzhen formation in Yuan'an County, Hubei, China and date back to the Anisian stage of the Middle Triassic. 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 Capitosaurs Triassic temnospondyls of Asia Fossils of China Fossil taxa described in 2005 Anisian life Anisian genus first appearances Anisian genus extinctions {{Triassic-animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sister Taxon
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and taxon B are sister groups to each other. Taxa A and B, together with any other extant or extinct descendants of their most recent common ancestor (MRCA), form a monophyletic group, the clade AB. Clade AB and taxon C are also sister groups. Taxa A, B, and C, together with all other descendants of their MRCA form the clade ABC. The whole clade ABC is itself a subtree of a larger tree which offers yet more sister group relationships, both among the leaves and among larger, more deeply rooted clades. The tree structure shown connects through its root to the rest of the universal tree of life. In cladistic standards, taxa A, B, and C may represent specimens, species, genera, or any other taxonomic units. If A and B are at the same taxonomi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stenotosauridae
Stenotosauridae is an extinct family of mastodonsauroid temnospondyls. It has included genera such as ''Stenotosaurus'', ''Wellesaurus'', and ''Procyclotosaurus ''Procyclotosaurus'' is an extinct genus of stenotosaurid capitosaurian temnospondyl. The type species is ''P. stantonensis''. In 1904, English paleontologist Arthur Smith Woodward described it as a species of '' Capitosaurus'', ''C. stantonens ...''. References Triassic temnospondyls Triassic first appearances Triassic extinctions {{temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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