It generally sports the same features as Diplocaulus, though it was smaller, measuring over 46 cm. Beerbower originally recognised two species, D. burkei and D. conemaughensis, but they are no longer regarded as being distinct from one another as their size ranges were found to overlap. Other species include D. meritae from Nebraska and an indeterminate species from Oklahoma.
Diplocaulus, a genus of extinct marine reptiles, is characterized by similar features but smaller in size, measuring over 46 cm. Beerbower initially recognized two species, D. burkei and D. conemaughensis, but they are now considered to be the same species due to overlapping size ranges. Other species include D. meritae from Nebraska and an unidentified species from Oklahoma.