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Discosauriscidae
Seymouriamorpha were a small but widespread group of limbed vertebrates (tetrapods). They have long been considered stem group, stem-amniotes (reptiliomorphs), and most paleontologists still accept this point of view, but some analyses suggest that seymouriamorphs are stem-tetrapods (not more closely related to Amniota than to Lissamphibia). Many seymouriamorphs were terrestrial or semi-aquatic. However, aquatic larvae bearing external gills and grooves from the lateral line system have been found, making them unquestionably non-amniotes. As they matured, they became more terrestrial and reptile-like. They ranged from 30 cm (1 ft) long lizard-sized creatures to the 1.5 m (5 ft) long ''Enosuchus''. If seymouriamorphs are reptiliomorphs, they were the distant relatives of amniotes. Seymouriamorphs are divided into three main groups: Kotlassiidae, Discosauriscidae, and Seymouriidae, which includes the best-known genus, ''Seymouria''. The last seymouriamorphs became Permian-Triassic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Utegenia
''Utegenia'' is a genus of early tetrapod. It is usually regarded as a basal seymouriamorph, but sometimes included in the Discosauriscidae or as a sister taxon of the latter. Only one species, ''Utegenia shpinari'', found from Kazakhstan, is known.Laurin, Michel. 1996. Utegenia shpinari. Version 1 January 1996. http://tolweb.org/Utegenia_shpinari/17542/1996.01.01 in The Tree of Life Web Project, http://tolweb.org/ ''Urumqia'', another basal seymouriamorph, from Ürümqi, Xinjiang of China is probably a junior synonym In taxonomy, the scientific classification of living organisms, a synonym is an alternative scientific name for the accepted scientific name of a taxon. The botanical and zoological codes of nomenclature treat the concept of synonymy differently. ... of ''Utegenia''. References Seymouriamorpha Cisuralian tetrapods Permian tetrapods of Asia Fossils of Kazakhstan {{paleo-tetrapod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reptiliomorph
Reptiliomorpha (meaning reptile-shaped; in PhyloCode known as ''Pan-Amniota'') is a clade containing the amniotes and those tetrapods that share a more recent common ancestor with amniotes than with living amphibians (lissamphibians). It was defined by Michel Laurin (2001) and Vallin and Laurin (2004) as the largest clade that includes ''Homo sapiens'', but not '' Ascaphus truei'' (tailed frog). Laurin and Reisz (2020) defined Pan-Amniota as the largest total clade containing ''Homo sapiens'', but not '' Pipa pipa'', '' Caecilia tentaculata'', and '' Siren lacertina''. The informal variant of the name, "reptiliomorphs", is also occasionally used to refer to stem-amniotes, i.e. a grade of reptile-like tetrapods that are more closely related to amniotes than they are to lissamphibians, but are not amniotes themselves; the name is used in this meaning e.g. by Ruta, Coates and Quicke (2003). An alternative name, " Anthracosauria", is also commonly used for the group, but is confusin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Carboniferous
Late or LATE may refer to: Everyday usage * Tardy, or late, not being on time * Late (or the late) may refer to a person who is dead Music * Late (The 77s album), ''Late'' (The 77s album), 2000 * Late (Alvin Batiste album), 1993 * Late!, a pseudonym used by Dave Grohl on his ''Pocketwatch (album), Pocketwatch'' album * Late (rapper), an underground rapper from Wolverhampton * "Late", a song by Kanye West from ''Late Registration'' Other uses * Late (Tonga), an uninhabited volcanic island southwest of Vavau in the kingdom of Tonga * Late (The Handmaid's Tale), "Late" (''The Handmaid's Tale''), a television episode * LaTe, Laivateollisuus, Oy Laivateollisuus Ab, a defunct shipbuilding company * Limbic-predominant age-related TDP-43 encephalopathy, a proposed form of dementia * Local-authority trading enterprise, a New Zealand business law * Local average treatment effect, a concept in econometrics * Late, a synonym for ''cooler'' in Stellar classification#"Early" and "late" nomencla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptoropha
''Leptoropha'' is an extinct genus of aquatic seymouriamorph known from the Middle Permian of Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders .... References Seymouriamorpha Permian tetrapods of Asia {{paleo-tetrapod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kotlassia
''Kotlassia'' (meaning "of Kotlas") extinct genus of kotlassiine seymouriamorph from the Late Permian of Russia. The type, and currently only, species is ''K. prima''. Discovery and naming During the 1890s, Russian paleontologist Vladimir Amalitsky discovered freshwater sediments dating from the Upper Permian in Northern Dvina, Arkhangelsk Oblast, northern European Russia. The locality, known as PIN 2005, consists of a creek with sandstone and lens-shaped exposures in a bank escarpment, containing many particularly well-preserved fossil skeletons, including the holotypes of ''Inostrancevia'' and ''Kotlassia''. Vladimir Amalitzky named and described ''Kotlassia prima'' in 1921 on the basis of the holotype specimen, an entire skeleton, and one additional skull; the additional skull has been described ad over-prepared by Bulanov (2003). It is often incorrectly assumed that ''Kotlassia prima'' was described by Amalitzky in 1898. A second species, ''K. secunda'', was also named ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphisauropus
''Amphisauropus'' is an ichnogenus commonly found in assemblages of trace fossils dating from the Permian to the Triassic The Triassic ( ; sometimes symbolized 🝈) is a geologic period and system which spans 50.5 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.4 Mya. The Triassic is t .... The tracks have been considered to be made by amphibians or by seymouriamorphs. The genus has been found in Europe, Morocco, and North America. Description The foot impressions show five digits and clear palm prints, though the fifth digit is not always impressed. The digits are short and broad with rounded tips. The pes (rear foot) is longer than wide while the manus (front foot) is wider than long. A continuous tail impression is also present. The animal may have had a trunk length of about and likely moved quite slowly. References Vertebrate trace fossils {{Trace-fossil-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ichnotaxon
An ichnotaxon (plural ichnotaxa) is "a taxon based on the fossilized work of an organism", i.e. the non-human equivalent of an artifact. ''Ichnotaxon'' comes from the Ancient Greek (''íchnos'') meaning "track" and English , itself derived from Ancient Greek (''táxis'') meaning "ordering".Definition o'ichno'at dictionary.com. Ichnotaxa are names used to identify and distinguish morphologically distinctive ichnofossils, more commonly known as trace fossils (fossil records of lifeforms' movement, rather than of the lifeforms themselves). They are assigned genus and species ranks by ichnologists, much like organisms in Linnaean taxonomy. These are known as ichnogenera and ichnospecies, respectively. "Ichnogenus" and "ichnospecies" are commonly abbreviated as "igen." and "isp.". The binomial names of ichnospecies and their genera are to be written in italics. Most researchers classify trace fossils only as far as the ichnogenus rank, based upon trace fossils that resemble eac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
