|
Plagiosauridae
Plagiosauridae is a clade of temnospondyl amphibians of the Middle to Late Triassic The Triassic ( ) is a geologic period and system (stratigraphy), system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago (Year#Abbreviations yr and ya, Mya), to the beginning of the Jurassic Period 201.36 .... 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, 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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagiosauridae
Plagiosauridae is a clade of temnospondyl amphibians of the Middle to Late Triassic The Triassic ( ) is a geologic period and system (stratigraphy), system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago (Year#Abbreviations yr and ya, Mya), to the beginning of the Jurassic Period 201.36 .... 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, 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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temnospondyli
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 bon ... [...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 cl ... [...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 of ... [...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, 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 correspond to feather-lik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerrothorax
''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, 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 correspond to feather-lik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagiosternum
''Plagiosternum'' (plae-jee-oh-ster-num, meaning "sideways breastbone") was a middle Triassic 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 Carbo ... that is native to Spitzbergen.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] |
Plagiosaurus
''Plagiosaurus'' is an extinct genus of temnospondyl amphibian - Arthur Smith Woodward regarded it as a synonym of ''Plagiosternum''. They were paedomorphic, retaining the larval gills on adulthood. They had weak simplified vertebrae, consisting of large intercentra and neural arches, the stereospondyl The Stereospondyli are a group of extinct temnospondyl amphibians that existed primarily during the Mesozoic period. They are known from all seven continents and were common components of many Triassic ecosystems, likely filling a similar ecologi ... condition. 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 of the Ladinian Inder Formation of Kazakhstan and the Anisian Donguz Formation The Donguz Formation, Donguz Svita, or Donguz Rocks (russian: Донгузские скалы) is a Middle Triassic geological formation that crops out on the right bank of Donguz River in Orenburg Oblast, Russia, across the settlement of Pervoma ... of Russia 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 Wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Triassic
The Early Triassic is the first of three epochs of the Triassic Period of the geologic timescale. It spans the time between Ma and Ma (million years ago). Rocks from this epoch are collectively known as the Lower Triassic Series, which is a unit in chronostratigraphy. The Early Triassic is the oldest epoch of the Mesozoic Era. It is preceded by the Lopingian Epoch (late Permian, Paleozoic Era) and followed by the Middle Triassic Epoch. The Early Triassic is divided into the Induan and Olenekian ages. The Induan is subdivided into the Griesbachian and Dienerian subages and the Olenekian is subdivided into the Smithian and Spathian subages. The Lower Triassic series is coeval with the Scythian Stage, which is today not included in the official timescales but can be found in older literature. In Europe, most of the Lower Triassic is composed of Buntsandstein, a lithostratigraphic unit of continental red beds. The Early Triassic and partly also the Middle Triassic span the in ... [...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] |
