ammonites
Platyoposaurus watsoni Efremov 1933 (tetrapod)

Vertebrata - Stegocephali - Archegosauridae

Alternative combination: Platyops watsoni

Belongs to Platyoposaurus according to M. A. Shishkin et al. 2000

Sister taxa: Platyoposaurus rickardi, Platyoposaurus stuckenbergi, Platyoposaurus vjuschkovi

Type specimen: PIN 2250/8, a skull. Its type locality is Shikhovo-Chirki, which is in a Kazanian/Severodvinian deltaic limestone in the Russian Federation.

Ecology: amphibious carnivore