Clelandina

Clelandina rubidgei has an extraordinarily small scleral ring relative to the size of its orbit, which implies that it was diurnal. It is the only rubidgeine with a preserved scleral ring, so it is unknown whether this trait was shared by other members of the subfamily. Like all rubidgeines, it was relatively large, with a skull up to 36 cm long. It had reduced dentition, with the teeth posterior to the canines being absent and replaced with a bony ridge. The skull has heavily pachyostosed, with massive rugose bosses. ==Classification==

Clelandina shares many characteristics with the contemporary Rubidgea, and is currently recognized as the sister taxon of this genus. Together with Dinogorgon and Leontosaurus, these genera form Rubidgeini, a clade of large gorgonopsians with distinctively robust, broad, and pachyostosed skulls. Below is a cladogram recovered by Christian Kammerer in 2016. }} ==See also==