Reptilia - Testudines - Nanhsiungchelyidae

Alternative combinations: Adocus variolosus, Compsemys variolosus

Synonym: Compsemys ogmius Cope 1875

Full reference: E. D. Cope. 1876. Descriptions of some vertebrate remains from the Fort Union Beds of Montana. Proceedings of the Academy of Natural Sciences of Philadelphia 28:248-261

Belongs to Basilemys according to O. P. Hay 1908

Sister taxa: Basilemys imbricaria, Basilemys nobilis, Basilemys orientalis, Basilemys sinuosa

Type specimens:

• Basilemys variolosa: AMNH 1465, a partial shell (nearly the whole of the plastron, various peripheral bones, and two imperfect costal plates)
• Compsemys ogmius: NMC specimen, a partial shell (part of a bridge peripheral and a fragment of plastron). Its type locality is Milk River, which is in a Maastrichtian terrestrial horizon in the Frenchman Formation of Canada.