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Recumbirostrans
Recumbirostra is a clade of tetrapods which lived during the Carboniferous and Permian periods. They are thought to have had a fossorial (burrowing) lifestyle and the group includes both short-bodied and long-bodied snake-like forms. At least one species, the molgophid '' Nagini mazonense,'' lost its forelimbs entirely. It includes the families Pantylidae, Gymnarthridae, Ostodolepidae, Rhynchonkidae and Brachystelechidae, with additional families such as Microbrachidae and Molgophidae being included by some authors. Recumbirostra was erected as a clade in 2007 to include many of the taxa traditionally grouped in "Microsauria", which has since been shown to be a paraphyletic or polyphyletic grouping. Like other "microsaurs", the recumbirostrans have traditionally been considered to be members of the subclass Lepospondyli; however, many phylogenetic analyses conducted since the 2010s have recovered recumbirostrans as basal sauropsid amniotes instead. Not all phylogenetic anal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dvellecanus
''Dvellecanus'' is an extinct genus of recumbirostran lepospondyl from the Early Permian of Oklahoma. The only species is ''Dvellecanus carrolli'', which was named in 2015 on the basis of a skull that was originally attributed to the closely related recumbirostran '' Rhynchonkos stovalli'' (it was named alongside another new recumbirostran, '' Aletrimyti gaskillae'', that was also once classified as ''R. stovalli''). ''Dvellecanus'', ''Rhynchonkos'', and ''Aletrimyti'' all come from the Fairmont Shale near the city of Norman in Cleveland County which is within the Anadarko Basin. The name ''Dvellecanus'' is based on an anagram of Cleveland, "dvellecan." ''D. carrolli'' has a skull morphology very similar to ''R. stovalli'' and ''A. gaskillae'': it has a short, pointed snout, large eye sockets, and a sturdy braincase. All of these features are indicative of a fossorial A fossorial () animal is one adapted to digging which lives primarily, but not solely, underground. Some examp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pantylidae
Pantylidae is an extinct family of lepospondyl amphibians and often considered a sister-group to the family Tuditanidae. The family contains two genera ''Pantylus'' and ''Stegotretus'', while a third, ''Sparodus ''Sparodus'' is an extinct genus of microsaur within the family Gymnarthridae. See also * Prehistoric amphibian * List of prehistoric amphibians This list of prehistoric amphibians is an attempt to create a comprehensive listing of all genera ...'', is sometimes placed here as well. References Recumbirostrans {{Lepospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchonkidae
''Rhynchonkos'' is an extinct genus of microsaur. It is the only known member of the family Rhynchonkidae. Originally known as ''Goniorhynchus'', it was renamed in 1981 because the name had already been given to another genus; the family, likewise, was originally named Goniorhynchidae but renamed in 1988. The type and only known species is ''R. stovalli'', found from the Early Permian Fairmont Shale in Cleveland County, Oklahoma. ''Rhynchonkos'' shares many similarities with ''Eocaecilia'', an early caecilian from the Early Jurassic of Arizona. Similarities between ''Rhynchonkos'' and ''Eocaecilia'' have been taken as evidence that caecilians are descendants of microsaurs. However, such a relationship is no longer widely accepted. Description ''Rhynchonkos'' has an elongated body with at least 37 presacral vertebrae. Most vertebrae have ribs. Unlike other microsaurs, the atlas of ''Rhynchonkos'' lacks ribs. Both ''Rhynchonkos'' and ''Euryodus'' have atlases that bear a strong r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchonkos
''Rhynchonkos'' is an extinct genus of microsaur. It is the only known member of the family Rhynchonkidae. Originally known as ''Goniorhynchus'', it was renamed in 1981 because the name had already been given to another genus; the family, likewise, was originally named Goniorhynchidae but renamed in 1988. The type and only known species is ''R. stovalli'', found from the Early Permian Fairmont Shale in Cleveland County, Oklahoma. ''Rhynchonkos'' shares many similarities with ''Eocaecilia'', an early caecilian from the Early Jurassic of Arizona. Similarities between ''Rhynchonkos'' and ''Eocaecilia'' have been taken as evidence that caecilians are descendants of microsaurs. However, such a relationship is no longer widely accepted. Description ''Rhynchonkos'' has an elongated body with at least 37 presacral vertebrae. Most vertebrae have ribs. Unlike other microsaurs, the atlas of ''Rhynchonkos'' lacks ribs. Both ''Rhynchonkos'' and ''Euryodus'' have atlases that bear a stron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joermungandr Bolti
''Joermungandr'' is an extinct genus of recumbirostran tetrapod from the Late Carboniferous Mazon Creek fossil beds of Illinois. It currently contains a single species, ''Joermungandr bolti.'' Like many other recumbirostrans, the body is elongated, which is likely an adaptation for fossorial A fossorial () animal is one adapted to digging which lives primarily, but not solely, underground. Some examples are badgers, naked mole-rats, clams, meerkats, and mole salamanders, as well as many beetles, wasps, and bees. Prehistoric eviden ...ity (digging and living underground). References Recumbirostrans Fossil taxa described in 2021 {{Lepospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aletrimyti
''Aletrimyti'' is an extinct genus of recumbirostran lepospondyl from the Early Permian of Oklahoma. De type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ... ''Aletrimyti gaskillae'' was named in 2015 by Matt Szostakiwskyj, Jason D. Pardo and Jason S. Anderson. References Cisuralian amphibians of North America Fossil taxa described in 2015 Recumbirostrans Paleontology in Oklahoma {{Lepospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Altenglanerpeton
''Altenglanerpeton'' is an extinct genus of microsaur amphibian from the Late Carboniferous or Early Permian of Germany. ''Altenglanerpeton'' was named in 2012 after the Altenglan Formation in which it was found. The type species, type and only species is ''A. schroederi''. Description ''Altenglanerpeton'' is known from a single partial skeleton from an outcrop of the Altenglan Formation, which is part of the Saar–Nahe Basin. The Altenglan Formation dates back to the Carboniferous-Permian transition, about 299 million years ago. The skeleton was discovered sometime in the 1870s in the village of Dickenschied#Werschweiler, Werschweiler, and was first described by German paleontologist Eckart Schröder in 1939. Schröder tentatively assigned the specimen to the microsaur ''Microbrachis'', although its classification as a microsaur was questioned in later years. The holotype skeleton includes a crushed skull preserved in dorsal or top view, and a straight length of vertebrae and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchonkidae
''Rhynchonkos'' is an extinct genus of microsaur. It is the only known member of the family Rhynchonkidae. Originally known as ''Goniorhynchus'', it was renamed in 1981 because the name had already been given to another genus; the family, likewise, was originally named Goniorhynchidae but renamed in 1988. The type and only known species is ''R. stovalli'', found from the Early Permian Fairmont Shale in Cleveland County, Oklahoma. ''Rhynchonkos'' shares many similarities with ''Eocaecilia'', an early caecilian from the Early Jurassic of Arizona. Similarities between ''Rhynchonkos'' and ''Eocaecilia'' have been taken as evidence that caecilians are descendants of microsaurs. However, such a relationship is no longer widely accepted. Description ''Rhynchonkos'' has an elongated body with at least 37 presacral vertebrae. Most vertebrae have ribs. Unlike other microsaurs, the atlas of ''Rhynchonkos'' lacks ribs. Both ''Rhynchonkos'' and ''Euryodus'' have atlases that bear a strong r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permian
The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.9 Mya. It is the last period of the Paleozoic Era; the following Triassic Period belongs to the Mesozoic Era. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison, who named it after the region of Perm in Russia. The Permian witnessed the diversification of the two groups of amniotes, the synapsids and the sauropsids ( reptiles). The world at the time was dominated by the supercontinent Pangaea, which had formed due to the collision of Euramerica and Gondwana during the Carboniferous. Pangaea was surrounded by the superocean Panthalassa. The Carboniferous rainforest collapse left behind vast regions of desert within the continental interior. Amniotes, which could better cope with these drier conditions, rose to dominance in place of their am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossorial
A fossorial () animal is one adapted to digging which lives primarily, but not solely, underground. Some examples are badgers, naked mole-rats, clams, meerkats, and mole salamanders, as well as many beetles, wasps, and bees. Prehistoric evidence The physical adaptation of fossoriality is widely accepted as being widespread among many prehistoric phyla and taxa, such as bacteria and early eukaryotes. Furthermore, fossoriality has evolved independently multiple times, even within a single family. Fossorial animals appeared simultaneously with the colonization of land by arthropods in the late Ordovician period (over 440 million years ago). Other notable early burrowers include ''Eocaecilia'' and possibly ''Dinilysia''. The oldest example of burrowing in synapsids, the lineage which includes modern mammals and their ancestors, is a cynodont, ''Thrinaxodon liorhinus'', found in the Karoo of South Africa, estimated to be 251 million years old. Evidence shows that this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nagini Mazonense
''Nagini'' (from Sanskrit ''Nāga, Nāgá'', "snake") is an extinct genus of recumbirostran tetrapods from the middle Carboniferous of the Mazon Creek fossil beds, Illinois, United States. The type and only species, ''Nagini mazonense'', was named by Arjan Mann and colleagues in 2022 from two specimens, both of which preserve soft tissue like other fossils from Mazon Creek: Milwaukee Public Museum, MPM VP359229.2 and Field Museum of Natural History, FMNH PR 1031. It is a member of the Lysorophia, Molgophidae, a lineage of amniote-like tetrapods which exhibited a pattern of body elongation and digit reduction on the limbs. ''Nagini'' is the first member of the group that shows the complete loss of the forelimbs and pectoral girdle, but it still has intact hindlimbs; this mirrors the pattern seen in the snake#Evolution, evolution of snakes, and suggests that molgophids underwent a similar mechanism of limb reduction beginning with the failure to form distinct forelimbs. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Carboniferous
Late may refer to: * LATE, an acronym which could stand for: ** 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 Music * ''Late'' (album), a 2000 album by The 77s * Late!, a pseudonym used by Dave Grohl on his ''Pocketwatch'' album * Late (rapper), an underground rapper from Wolverhampton * "Late" (song), a song by Blue Angel * "Late", a song by Kanye West from ''Late Registration'' Other * Late (Tonga), an uninhabited volcanic island southwest of Vavau in the kingdom of Tonga * "Late" (''The Handmaid's Tale''), a television episode * LaTe, Oy Laivateollisuus Ab, a defunct shipbuilding company * Late may refer to a person who is Dead See also * * * ''Lates'', a genus of fish in the lates perch family * Later (other) * Tardiness * Tardiness (scheduling) In scheduling, tardiness is a measure of a delay in exe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
