Dvinosauria

Dvinosauria are one of several new 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.

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