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Saurichthyiformes
Saurichthyiformes is an extinct order (biology), order of Actinopterygii, ray-finned fish which existed in Asia, Africa, Australia (continent), Australia, Europe and North America, during the late Permian to early Middle Jurassic. Saurichthyiiformes comprise two families, Saurichthyidae and Yelangichthyidae. Yelangichthyidae is monotypy, monotypic, containing only the genus ''Yelangichthys.'' The gar or needlefish-like Saurichthyidae is primarily known from the genus ''Saurichthys.'' Additionally, the subgenus, subgenera ''Saurorhynchus'' ''Costasaurichthys'', ''Eosaurichthys'', ''Lepidosaurichthys'', and ''Sinosaurichthys'' are frequently used to group species, and are sometimes considered separate genera. Species are known from both marine end freshwater deposits. They had their highest diversity during the Early Triassic, Early and Middle Triassic. Their phylogenetic position is uncertain, while they have often been considered members of Chondrostei, and thus related to liv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chondrostei
Chondrostei is a subclass of non- neopterygian ray-finned fish. While the term originally referred to the paraphyletic grouping of all non-neopterygian ray-finned fish, it was redefined by Patterson in 1982 to be a clade comprising the Acipenseriformes (which includes sturgeon and paddlefish) and their extinct relatives. Taxa commonly suggested to represent relatives of the Acipenseriformes include the Triassic marine fish '' Birgeria'' and the Saurichthyiformes, but their relationship with the Acipenseriformes has been strongly challenged on cladistic grounds. Coccolepididae, a group of small weakly ossified Jurassic and Cretaceous fish found in both marine and freshwater environments, have also been suggested to be close relatives of the Acipenseriformes. However, this has never been subject to cladistic analysis. Near & Thacker (2024) also recovered the ptycholepiform '' Boreosomus'' as a stem-acipenseriform. The following taxa are known: * Subclass Chondrostei ** Genus � ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yelangichthys
''Yelangichthys'' is an extinct genus of prehistoric bony fish that lived during the Anisian age of the Middle Triassic epoch in what is now Guizhou, China. The type and only species, ''Y. macrocephalus'', is known from two specimens, both of which were recovered from the Upper Member of the Guanling Formation. Ecology & evolution Phylogenetic analysis places ''Yelangichthys'' as a basal member of the Saurichthyiformes. It is distinguished from other saurichthyiforms most notably by its broad skull and crushing dentition. Similarities with other saurichthyiforms include the lengthened rostrum. It is referred to its own monotypyic family, Yelangichthyidae. See also * Prehistoric fish * List of prehistoric bony fish This list of prehistoric bony fish is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be bony fish (class Osteichthyes), excluding purely vernacular terms. The list includ ... References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saurichthys
''Saurichthys'' (from , 'lizard' and 'fish') is an extinct genus of predatory Actinopterygii, ray-finned fish from the Triassic period (geology), Period. It is the type genus of the family (taxonomy), family Saurichthyidae (Changhsingian-Jurassic, Middle Jurassic), and the most speciose and longest lasting genus in the family. This family also includes the Permian ''Eosaurichthys'' (China) and the Jurassic ''Saurorhynchus'' (= ''Acidorhynchus'') from Europe and North America, though it may be more appropriate to treat these as subgenera of ''Saurichthys,'' due to the genus ''Saurichthys'' otherwise being paraphyletic.'''' Fossils of ''Saurichthys'' have been found on all continents except South America and Antarctica.''Saurichthys'' at Fossilworks.org It inhabited both marine and fres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yelangichthyidae
''Yelangichthys'' is an extinct genus of prehistoric bony fish that lived during the Anisian age of the Middle Triassic epoch in what is now Guizhou, China. The type and only species, ''Y. macrocephalus'', is known from two specimens, both of which were recovered from the Upper Member of the Guanling Formation. Ecology & evolution Phylogenetic analysis places ''Yelangichthys'' as a basal member of the Saurichthyiformes. It is distinguished from other saurichthyiforms most notably by its broad skull and crushing dentition. Similarities with other saurichthyiforms include the lengthened rostrum. It is referred to its own monotypyic family, Yelangichthyidae. See also * Prehistoric fish * List of prehistoric bony fish This list of prehistoric bony fish is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be bony fish (class Osteichthyes), excluding purely vernacular terms. The list includ ... References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinosaurichthys
''Sinosaurichthys'' is an extinct genus of Saurichthyidae, saurichthyid Actinopterygii, ray-finned fish, which existed in south-western China during the Middle Triassic (Anisian age). Fossils have been found in the Upper Member of the Guanling Formation of two localities: Yangjuan of Panxian County, Guizhou Province, and Dawazi of Luoping, Yunnan Province, China. It was first named by Wu Feixiang, Sun Yuanlin, Xu Guanghui, Hao Weicheng, Jiang Dayong and Sun Zuoyu in 2010 in paleontology, 2010. The type species is ''Sinosaurichthys longipectoralis''. There are two additional species, ''S. longimedialis'' and ''S. minuta''. The species ''Saurichthys spinosa'' from the Middle Triassic of China may be closely related with ''Sinosaurichthys''. ''Sinosaurichthys'' is often treated as a subgenus of ''Saurichthys'', rather than a genus.Tintori, A. 2013. A new species of ''Saurichthys'' (Actinopterygii) from the Middle Triassic (early Ladinian) of the northern Grigna Mountain (Lombardy, I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saurichthys (Mensch & Natur-Museum, München)
''Saurichthys'' (from , 'lizard' and 'fish') is an extinct genus of predatory ray-finned fish from the Triassic Period. It is the type genus of the family Saurichthyidae (Changhsingian-Middle Jurassic), and the most speciose and longest lasting genus in the family. This family also includes the Permian ''Eosaurichthys'' (China) and the Jurassic '' Saurorhynchus'' (= ''Acidorhynchus'') from Europe and North America, though it may be more appropriate to treat these as subgenera of ''Saurichthys,'' due to the genus ''Saurichthys'' otherwise being paraphyletic.'''' Fossils of ''Saurichthys'' have been found on all continents except South America and Antarctica.''Saurichthys'' at .org [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saurorhynchus Brevirostris With A Fish
''Saurorhynchus'' is an extinct genus of carnivorous bony fish that lived during the Early Jurassic, Early and Middle Jurassic epoch (geology), epochs. Fossils have been found in Europe (France, Belgium, Luxembourg, United Kingdom, Germany, Italy) and North America (Canada). It is commonly found in pelagic and lagoonal deposits, but mostly marine. Largest specimens can grow up to . Four Jurassic species are recognized. In addition, the Late Triassic species ''Saurichthys, Saurichthys striolatus'', ''Saurichthys, Saurichthys calcaratus'', and ''Saurichthys, Saurichthys deperditus'' are sometimes referred to ''Saurorhynchus'', although ''Saurorhynchus'' is then treated as a subgenus of ''Saurichthys''. ''Saurorhynchus'' is the youngest representative of the family Saurichthyidae and the order Saurichthyiformes. This family is known for its large, elongate jaws, similar to modern Belonidae. Saurichthyidae also includes the Permian genus ''Eosaurichthys'' and the Triassic genus '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saurorhynchus
''Saurorhynchus'' is an extinct genus of carnivorous bony fish that lived during the Early and Middle Jurassic epochs. Fossils have been found in Europe (France, Belgium, Luxembourg, United Kingdom, Germany, Italy) and North America (Canada). It is commonly found in pelagic and lagoonal deposits, but mostly marine. Largest specimens can grow up to . Four Jurassic species are recognized. In addition, the Late Triassic species '' Saurichthys striolatus'', '' Saurichthys calcaratus'', and '' Saurichthys deperditus'' are sometimes referred to ''Saurorhynchus'', although ''Saurorhynchus'' is then treated as a subgenus of ''Saurichthys''. ''Saurorhynchus'' is the youngest representative of the family Saurichthyidae and the order Saurichthyiformes. This family is known for its large, elongate jaws, similar to modern Belonidae. Saurichthyidae also includes the Permian genus ''Eosaurichthys'' and the Triassic genus ''Saurichthys''. See also * Prehistoric fish * List of prehistoric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eosaurichthys
''Eosaurichthys'' ("dawn ''Saurichthys''") is an extinct genus, or potentially subgenus, of marine saurichthyidae, saurichthyid ray-finned fish that lived during the late Permian epoch (geology), epoch (Changhsingian age) to potentially the Early Triassic epoch (Olenekian). It is one of the earliest saurichthyid genera known from the fossil record. If ''E. madagascariensis'' is a member of this genus, then it appears to have survived the Permian–Triassic extinction event, Permian-Triassic extinction event. ''Eosaurichthys'' is often treated as a subgenus of ''Saurichthys'' rather than a genus, with its type species referred to as ''Saurichthys'' (''Eosaurichthys'') ''chaoi''. Up to two species are known: * ''E. chaoi'' Liu & Wei, 1988 - Lopingian, Late Permian (Changhsingian) of China (Changxing Formation) * ''E. madagascariensis'' (Jean Piveteau, Piveteau, 1945) - Early Triassic (Olenekian) of Madagascar (Sakamena Formation) Saurichthyid remains tentatively referred to ''E. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Changhsingian
In the geologic time scale, the Changhsingian or Changxingian is the latest age or uppermost stage of the Permian. It is also the upper or latest of two subdivisions of the Lopingian Epoch or Series. The Changhsingian lasted from to 251.9 Ma ago. It is preceded by the Wuchiapingian age/stage and is followed by the Induan age/stage (Early Triassic epoch). The greatest mass extinction in the Phanerozoic eon, the Permian–Triassic extinction event, occurred around the end of this age. Stratigraphic definitions The Changhsingian is named after Changxing () in northern Zhejiang, China. The stage was named for the Changhsing Limestone. The name was first used for a stage in 1970 and was anchored in the international timescale in 1981.. The base of the Changhsingian Stage is at the first appearance of the conodont species '' Clarkina wangi''. The global reference profile is profile D at Meishan, in the type area in Changxing, just below the Changhsingian foraminifer index fossi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
