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 is a genus of extinct marine reptiles that generally shares features with Diplocaulus burkei and Diplocaulus conemaughensis, but it was smaller, measuring over 46 cm. Beerbower initially identified two species, D. burkei and D. conemaughensis, but they are now considered to be the same species due to their similar size ranges. Other species include D. meritae from Nebraska and an unidentified species from Oklahoma.