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
- 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.