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Plagiosauridae
Plagiosauridae is a clade of temnospondyls of the Middle to Late Triassic. Deposits of the group are most commonly found in non-marine aquatic depositional environments from central Europe and Greenland, but other remains have been found in Russia, Scandinavia, Australia and possibly Thailand. Material The majority of plagiosaurid remains are of the genus ''Gerrothorax'', which have been recovered from the Fleming Fjord Formation of Jameson Land, East Greenland, and from many localities in southern Germany. All of this material is currently assigned to a single species, ''pulcherrimus''. ''Plagiosuchus'' material is also very abundant, though poorly preserved and has been found only from Germany. Additional material, including the material of all other plagiosaurids, is significantly more fragmentary and less abundant than that of ''Gerrothorax.'' These additional materials are predominantly from Germany and Russia with some potential material also reported from Thailand and Bra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temnospondyl
Temnospondyli (from Greek language, Greek τέμνειν, ''temnein'' 'to cut' and σπόνδυλος, ''spondylos'' 'vertebra') or temnospondyls is a diverse ancient order (biology), order of small to giant tetrapods—often considered Labyrinthodontia, primitive amphibians—that flourished worldwide during the Carboniferous, Permian and Triassic periods, with fossils being found on every continent. A few species continued into the Jurassic and Early Cretaceous periods, but all had gone extinct by the Late Cretaceous. 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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megalophthalma
''Megalophthalma'' (meaning "large eye" from the Greek ''megale'' large"and ''ophthalmós'' eye" is an extinct genus of temnospondyl amphibian belonging to the family Plagiosauridae. It is represented by the single type species ''Megalophthalma ockerti'' from the Middle Triassic Erfurt Formation in southern Germany, which is itself based on a single partial skull and a fragment of the lower jaw. ''Megalophthalma'' is distinguished from other temnospondyls by its very large orbits or eye sockets, which occupy most of the skull and are bordered by thin struts of bone. Like those of most plagiosaurids, the skull flat, wide, and roughly triangular. The orbits are pentagon-shaped. The bones at the back of the skull (the occiput) are highly modified and show similarities with those of the plagiosaurid '' Plagiosternum''. Both ''Megalophthalma'' and ''Plagiosternum'' lack prefrontal and postfrontal bones. In fact, ''Megalophthalma'' and ''Plagiosternum'' are thought to form their own c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagiobatrachus
''Plagiobatrachus'' is an extinct genus of plagiosaurid temnospondyl. It is known from the Rewan Formation, an Early Triassic formation in Australia. History of study ''Plagiobatrachus'' was described for vertebrae and partial mandibular material with pustular ornamentation for the type species, ''P. australis'', by Anne Warren. This remains the only plagiosaurid known from Australia and one of the few records from the present-day southern hemisphere. It is also one of the few Early Triassic records of plagiosaurids. The vertebrae of plagiosaurids are fairly distinctive in having a single massive central element and neural arches that sit between successive centra (intercentral), allowing for the identification of the vertebral material as that of a plagiosaurid. However, the fragmentary nature of the material and the absence of any additional recovered material has limited the study of this taxon. See also * Prehistoric amphibian * List of prehistoric amphibians This list o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagiosaurus
''Plagiosaurus'' is an extinct genus of temnospondyl amphibian. The type and only species is ''P. depressus'', first described by Otto Jaekel in 1914. Arthur Smith Woodward regarded the genus as a synonym of '' Plagiosternum'', but most researchers consider it to be valid. It was paedomorphic, retaining the larval gills in adulthood. Like many stereospondyls, it had weak simplified vertebrae, consisting of large intercentra and neural arch Each vertebra (: vertebrae) is an irregular bone with a complex structure composed of bone and some hyaline cartilage, that make up the vertebral column or spine, of vertebrates. The proportions of the vertebrae differ according to their spinal ...es, which is known as the stereospondylous condition. References Triassic temnospondyls of Europe Plagiosauridae {{temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerrothorax Pustuloglomeratus
''Gerrothorax'' ("wicker chest") is an extinct genus of temnospondyl amphibian from the Triassic period of Greenland, Germany, Poland, Sweden, and possibly Thailand. It is known from a single species, ''G. pulcherrimus'', although several other species such as ''G. pustuloglomeratus'' have been named in the past. ''Gerrothorax'' was about long, and had a remarkably flattened body. It probably hid under sand or mud on river and lake bottoms, and in brackish waters, scanning for prey with its large, upward-facing eyes. ''Gerrothorax'' had an unusually shaped skull with angular protrusions on the sides. This looked vaguely similar to the skull of the earlier, unrelated, amphibian ''Diplocaulus'', but was not so developed. Some ''Gerrothorax'' fossils preserved hypobranchials anceratobranchials(bony gill arches) near the neck. This shows that ''Gerrothorax'' was pedomorphic, retaining its larval gills as an adult. When originally described in 1946, these bones were considered to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagiosternum
''Plagiosternum'' (plae-jee-oh-ster-num, meaning "sideways breastbone") was a middle Triassic temnospondyl that is native to Spitzbergen Svalbard ( , ), previously known as Spitsbergen or Spitzbergen, is a Norwegian archipelago that lies at the convergence of the Arctic Ocean with the Atlantic Ocean. North of mainland Europe, it lies about midway between the northern coast o ....Warren, Anne. Plagiosternum granulosum E. Fraas: a plagiosaurid temnospondyl from the Middle Triassic of Crailsheim, Germany. Staatliches Museum für Naturkunde, 1995. References Triassic temnospondyls of Europe Plagiosauridae {{temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagioscutum
''Plagioscutum'' is an extinct genus of Middle Triassic temnospondyl amphibian from the Ladinian Inder Formation of Kazakhstan and the Anisian Donguz Formation of Russia. 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 gen ... References Plagiosauridae Anisian genera Ladinian genera Triassic temnospondyls Triassic Kazakhstan Fossils of Kazakhstan Triassic Russia Fossils of Russia Fossil taxa described in 1986 {{Temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagiosuchus
''Plagiosuchus'' is an extinct genus of plagiosaurid temnospondyl. It is known from several collections from the Middle Triassic of Germany. History of study The type and only species of ''Plagiosuchus, P. pustuliferus'', was originally described as a species of ''Plagiosternum'', with the specific epithet as pustuliferum''' by Eberhard Fraas in 1896. The interclavicle described and figured by Fraas had originally been noted by him as ''Labyrinthodon'' sp. in an 1889 publication and before that by von Meyer and Plienenger in a 1844 publication. This interclavicle was not formalized as the holotype but is recognized as the lectotype. The taxon was reassigned to the newly named genus ''Plagiosuchus'' in 1922 by von Huene, who described new material that permitted him to differentiate it from ''Plagiosternum granulosum''; this was also when the specific epithet was grammatically modified. Additional material was referenced and briefly figured by Hellrung (2003) and Werneburg and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagiorophus
''Plagiorophus'' is an extinct genus of plagiosaurid temnospondyl amphibian. It is known from the Middle Triassic Bukobay Formation (Ladinian) and Donguz Formation (Anisian) of Russia. 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 gen ... References Stereospondyli Triassic amphibians of Europe Anisian genera Ladinian genera Triassic Russia Fossils of Russia Fossil taxa described in 1955 {{Temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Preservation Artifact
Preservation may refer to: Heritage and conservation * Preservation (library and archival science), activities aimed at prolonging the life of a record while making as few changes as possible * ''Preservation'' (magazine), published by the National Trust for Historic Preservation * Historic preservation, endeavor to preserve, conserve and protect buildings, objects, landscapes or other artifacts * Conservation and restoration of cultural heritage, protection and care of tangible cultural heritage Mathematics and computer science * Type preservation, property of a type system if evaluation of expressions does not cause their type to change * Case preservation, when computer storage preserves the distinction between upper and lower case * Digital preservation, endeavor to ensure that digital information of continuing value remains accessible and usable Arts and entertainment * ''Preservation'' (2018 novel), historical fiction by Jock Serong about the wreck of the ''Sydney ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
