Dvinosauria

Dvinosauria Temporal range: Late Carboniferous - Early Triassic
Dvinosaurus primus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Amphibia
Order:	†Temnospondyli
Suborder:	†Dvinosauria Yates and Warren, 2000
Families
clades of Temnospondyl amphibians named in the phylogenetic review of the group by Yates and Warren 2000. They represent a group of primitive semi-aquatic to completely aquatic amphibians, and are known from the Late Carboniferous to the Early Triassic, being most common in the Permian period. Their distinguishing characteristics are a reduction of the otic notch; the loss of a flange on the rear side of the pterygoid; and 28 or more presacral vertebrae. Trimerorhachidae is the most basal family of dvinosaurs. Most other dvinosaurs are placed in the superfamily Dvinosauroidea. Within Dvinosauroidea are two families, Eobrachyopidae and Tupilakosauridae, as well as dvinosaurs that cannot be placed in either family, such as Dvinosaurus and Kourerpeton. A 2008 phylogenetic analysis found Eobrachyopidae to be paraphyletic, representing a grade of basal dvinosauroids. Below is a cladogram showing the phylogenetic relationships of dvinosaurs from Englehorn et al. (2008):[1] Dvinosauria   Trimerorhachidae  Trimerorhachis Neldasaurus Perryella  Dvinosauroidea  Isodectes (Eobrachyopidae) Acroplous (Eobrachyopidae) Dvinosaurus  Tupilakosauridae  Slaugenhopia Tupilakosaurus Thabanchuia References ^ Englehorn, J.; Small, B.J.; and Huttenlocker, A. (2008). "A redescription of Acroplous vorax (Temnospondyli: Dvinosauria) based on new specimens from the Early Permian of Nebraska and Kansas, U.S.A.". Journal of Vertebrate Paleontology 28 (2): 291–305. doi:10.1671/0272-4634(2008)28[291:AROAVT]2.0.CO;2.  Laurin, M. and Steyer, J-S (2000) Phylogeny and Apomorphies of Temnospondyls, The Tree of Life Web Project Yates, A. M., and Warren A. A., 2000, The phylogeny of the ‘higher’ temnospondyls (Vertebrata: Choanata) and its implications for the monophly and origins of the Stereospondyli: Zoological Journal of the Linnean Society, v. 128, p. 77-121. Links Temnospondyli: Limnarchia at Palaeos Dvinosauria at Mikko's Phylogeny Archive (cladogram based on Yates and Warren 2000) Suborder †Dvinosauria - Scientific Hierarchy at the Taxonomicon Wikimedia Foundation. 2010. Игры ⚽ Нужно решить контрольную? Slipped strand mispairing Systems Nuclear Auxiliary Power Program Look at other dictionaries: Dvinosauria — Saltar a navegación, búsqueda ? Dvinosauria Rango fósil: Carbonífero Superior Triásico Inferior Dvinosaurus …   Wikipedia Español Temnospondyli — Temnospondyls Temporal range: Early Carboniferous Early Cretaceous, 330–120 Ma Possible descendant taxon Lissamphibia survives to present …   Wikipedia Temnospondyli —   Temnospóndilos Rango temporal: Carbonífero Inferior Cretácico Inferior …   Wikipedia Español Temnospondyli (classification phylogenetique) — Temnospondyli (classification phylogénétique) Cette page a pour objet de présenter un arbre phylogénétique des Temnospondyli (ou Temnospondyles), c est à dire un cladogramme mettant en lumière les relations évolutives complexes (relations groupes …   Wikipédia en Français Temnospondyli (classification phylogénétique) — Cette page a pour objet de présenter un arbre phylogénétique des Temnospondyli (Temnospondyles), c est à dire un cladogramme mettant en lumière les relations de parenté existant entre leurs différents groupes (ou taxa), telles que les dernières… …   Wikipédia en Français Двинозавры — ? † Двинозавры Dvinosaurus …   Википедия Stereospondyli — Taxobox name = Dvinosauria regnum = Animalia image width = 250px image caption = Peltobatrachus phylum = Chordata superclassis = Tetrapoda classis = Amphibia ordo = †Temnospondyli subordo = †Stereospondyli subdivision ranks = Families subdivision …   Wikipedia Dvinosaurus — Temporal range: Late Permian Life restoration of Dvinosaurus primus Scientific classification …   Wikipedia Osteoderm — Osteoderme des ausgestorbenen Krokodils Deinosuchus Als Osteoderme (von altgriechisch ὀστέον ostéon ‚Knochen‘ und δέρμα dérma ‚Haut‘),[1] Osteodermata oder Hautknochenplat …   Deutsch Wikipedia Temnospondylen — Temnospondyli Skelett von Eryops megacephalus im Muséum national d histoire naturelle Zeitraum Karbon bis …   Deutsch Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”