Neldasaurus wrightae (Chase 1965; Early Permian) was considered a labyrinthodont, then a dvinosaurian temnospondyl, family: Trimerorachidae. Here its nests at the base of one clade of Temnospondyli with Metoposaurus and Trematosaurus.
Chase JN 1965. Neldasaurus wrightae, a new rhachitomous labyrinthodont from the Texas Lower Permian. Bulletin of the Museum of Comparative Zoology. 133 (3): 153–225.
Witzmann F and Brainerd E 2017. Modeling the physiology of the aquatic temnospondyl Archegosaurus decheni from the early Permian of Germany. Fossil Record. 20 (2): 105–127.
