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Gomphodontosuchine
Gomphodontosuchinae is a subfamily of Triassic traversodontid cynodonts. It includes the genera ''Gomphodontosuchus'' (the type genus), ''Exaeretodon'', ''Menadon'', ''Protuberum'', ''Ruberodon'', ''Scalenodontoides'' and ''Siriusgnathus''. Below is a cladogram showing the phylogenetic In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ... relationships of gomphodontosuchines from Kammerer ''et al.'' (2008): References Traversodontids Triassic first appearances Triassic extinctions Prehistoric animal subfamilies Tetrapod subfamilies {{Paleo-Therapsid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triassic
The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago (Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period of the Mesozoic Era. Both the start and end of the period are marked by major extinction events. The Triassic Period is subdivided into three epochs: Early Triassic, Middle Triassic and Late Triassic. The Triassic began in the wake of the Permian–Triassic extinction event, which left the Earth's biosphere impoverished; it was well into the middle of the Triassic before life recovered its former diversity. Three categories of organisms can be distinguished in the Triassic record: survivors from the extinction event, new groups that flourished briefly, and other new groups that went on to dominate the Mesozoic Era. Reptiles, especially archosaurs, were the chief terrestrial vertebrates during this time. A specialized subgroup of arch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traversodontidae
Traversodontidae is an extinct family of herbivorous cynodonts. Traversodonts were primarily Gondwanan, with many species known from Africa and South America. Recently, traversodonts have also been found from Europe and eastern North America. Traversodonts first appeared in the Middle Triassic and diversified in the Late Triassic before going extinct at the end of the epoch. The family Traversodontidae was erected by Friedrich von Huene in 1936 for cynodonts first found in São Pedro do Sul in Paleorrota, Brazil. Description Traversodonts are members of Gomphodontia, a group of herbivorous cynognathian cynodonts. As an adaptation toward eating plants, they have wide postcanine teeth behind large canines. These postcanines are closely spaced with their crowns touching each other. Each is usually wider than it is long and is covered in several cusps. Because of their complexity, postcanine teeth are the primary means of identifying and distinguishing different species of trave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triassic Extinctions
The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period of the Mesozoic Era. Both the start and end of the period are marked by major extinction events. The Triassic Period is subdivided into three epochs: Early Triassic, Middle Triassic and Late Triassic. The Triassic began in the wake of the Permian–Triassic extinction event, which left the Earth's biosphere impoverished; it was well into the middle of the Triassic before life recovered its former diversity. Three categories of organisms can be distinguished in the Triassic record: survivors from the extinction event, new groups that flourished briefly, and other new groups that went on to dominate the Mesozoic Era. Reptiles, especially archosaurs, were the chief terrestrial vertebrates during this time. A specialized subgroup of archosau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traversodontids
Traversodontidae is an extinct family of herbivorous cynodonts. Traversodonts were primarily Gondwanan, with many species known from Africa and South America. Recently, traversodonts have also been found from Europe and eastern North America. Traversodonts first appeared in the Middle Triassic and diversified in the Late Triassic before going extinct at the end of the epoch. The family Traversodontidae was erected by Friedrich von Huene in 1936 for cynodonts first found in São Pedro do Sul in Paleorrota, Brazil. Description Traversodonts are members of Gomphodontia, a group of herbivorous cynognathian cynodonts. As an adaptation toward eating plants, they have wide postcanine teeth behind large canines. These postcanines are closely spaced with their crowns touching each other. Each is usually wider than it is long and is covered in several cusps. Because of their complexity, postcanine teeth are the primary means of identifying and distinguishing different species of travers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Massetognathus
''Massetognathus'' ( ; Greek for "chewing muscle jaw") is an extinct genus of plant-eating traversodontid cynodonts. They lived during the Triassic Period about 235 million years ago, and are known from the Chañares Formation in Argentina and the Santa Maria Formation in Brazil. Description ''Massetognathus'' species measured to about in length with an estimated weight between . ''Massetognathus'' was the smaller, plant-eating equivalent of the better-known '' Cynognathus'' with incisors, fang-like canines and flat-topped molars covered by low ridges, an adaptation for grinding tough plant stems, roots, and other plant materials. It had a low and flattened skull indicating that the specimen had a relatively shorter and broader snout than larger specimens. It was a fox sized animal with claws on its feet and a long dog-like tail. Like most cynodonts, there is some evidence that they laid eggs, were warm blooded, as indicated by the detailed structure of the bones, and had a b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santacruzodon
''Santacruzodon'' is an extinct genus of cynodonts which existed in Brazil during the Triassic period. The type species is ''Santacruzodon hopsoni''. Species ''Santacruzodon hopsoni'', is a species that was collected in 1995 in Santa Cruz do Sul, in the Geopark of Paleorrota, Brazil. This species is linked to ''Dadadon'', found in Madagascar Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa .... References External links FiguraGerman Natural History Museum Traversodontids Prehistoric cynodont genera Late Triassic synapsids of South America Fossil taxa described in 2003 {{paleo-therapsid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dadadon
''Dadadon'' is an extinct genus of traversodontid cynodonts which existed in Madagascar during the late 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 .... The only species in the genus is ''Dadadon isaloi''. References Traversodontids Prehistoric cynodont genera Prehistoric animals of Madagascar Triassic Madagascar Middle Triassic synapsids of Africa Fossil taxa described in 2000 {{paleo-therapsid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andescynodon
''Andescynodon'' is a genus of traversodontid cynodonts from the Middle Triassic of Argentina. Fossils are known from the Cerro de las Cabras and Cacheutá Formations. ''Andescynodon'' is one of the most basal traversodontids. Another traversodontid called ''Rusconiodon'' has also been identified from the Cerro de las Cabras Formation but is now considered a junior synonym of ''Andescynodon''. Description and history The type species ''Andescynodon mendozensis'' was named in 1967 and reported from the Rio Mendoza Formation. The location where remains have been found was later shown to be part of the Cerro de las Cabras Formation. Like all traversodontids, ''Andescynodon'' has wide postcanine teeth at the back of its jaws. These wide teeth are seen as evidence of a herbivorous diet and give traversodontids their name (their teeth are transversely wide). One distinguishing feature of ''Andescynodon'' is the forward position of a ridge on these postcanine teeth. The temporal r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traversodon
''Traversodon'' is an extinct genus of cynodonts. It was a relative of the ancestor to modern mammals. ''Traversodon'' lived in what is now South America. Species ''Traversodon stahleckeri'' was first found by Friedrich von Huene in 1936 in the Geopark of Paleorrota, São Pedro do Sul, Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area .... References Paleobiology DatabaseUNIVERSIDADE DO RIO GRANDE DO SUL Traversodontids Prehistoric cynodont genera Late Triassic synapsids of South America Fossil taxa described in 1936 Taxa named by Friedrich von Huene {{paleo-therapsid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pascualgnathus
''Pascualgnathus'' is an extinct genus of traversodontid cynodonts from the Middle Triassic of Argentina. Fossils have been found from the Río Seco de la Quebrada Formation of the Puesto Viejo Group. The type species ''P. polanskii'' was named in 1966. Description ''Pascualgnathus'' is a small traversodontid. It has large upper canine teeth and small postcanine teeth. The postcanine teeth of ''Pascualgnathus'' and other traversodontids are wide, allowing them to eat plant material. The upper postcanines of ''Pascualgnathus'' are rectangular. Each has a central ridge and a cusp on the side facing the mouth. There are also two cusps on the side of the tooth facing the lips, with one being larger than the other. The lower postcanines have less of a rectangular shape and have only two cusps. Unlike the upper postcanines, they are longer than they are wide. Classification When ''Pascualgnathus'' was first named in 1966, it was considered a member of the family Diademodontidae more c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scalenodon
''Scalenodon'' is an extinct genus of traversodontid cynodonts from the Middle Triassic of Africa and possibly Russia. The type species ''S. angustifrons'' was named in 1946 and several other species were named in the following years. Most of the species from Africa are now thought to belong to different genera than ''Scalenodon''. History and species The first fossils belonging to ''Scalenodon'' were found in the Manda Formation of Zambia and assigned to ''Trirachodon angustifrons'' in 1946. In 1955, the species was given its own genus, ''Scalenodon''. In 1963, a second species called ''S. drysdalli'' was named from the Ntawere Formation in the Luangwa Valley of Zambia. Later that year ''S. drysdalli'' was placed in its own genus, '' Luangwa''. Three additional species, ''S. attridgei'', ''S. charigi'', and ''S. hirschoni'', were named from the Manda Formation in 1972. In 1973, a Russian species of ''Scalenodon'' was named ''S. boreus''. ''S. boreus'' is known from the southern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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