Claudius angustatus Cope 1865:187

Holotype: USNM 6518 (photographed in Smith & Smith 1980:905); parts of same specimen were originally catalogued as USNM 6518 and 6525 (Cochran 1961:230, but both are now catalogued under USNM 6518 (Reynolds et al. 2007:24).

Claudius megalocephalus Bocourt 1868: 122

Holotype: MNHN 1600 (Smith & Smith 1980:34).