Full reference: J. A. Tihen. 1974. Two new North American Miocene salamandrids. Journal of Herpetology 8(3):211-218
Type specimen: UNSM 61040, a set of vertebrae (intact dorsal vertebra). Its type locality is Flint Hill (Notre Dame locality), which is in a Hemingfordian terrestrial horizon in the Batesland Formation of South Dakota.