Mammalia - Rodentia - Florentiamyidae

Alternative combination: Sanctimus tiptoni

Full reference: J. R. Macdonald. 1970. Review of the Miocene Wounded Knee faunas of southwestern South Dakota. Bulletin of the Los Angeles County Museum of Natural History, Science 8:165-82

Belongs to Florentiamys according to J. E. Storer 2002

Sister taxa: Florentiamys agnewi, Florentiamys kinseyi, Florentiamys loomisi

Ecology: ground dwelling herbivore

Average measurements (in mm): P4 2.34 x 2.40, M1 1.99 x 2.30, M2 1.95 x 2.23, p4 1.79 x 1.69, m1 2.01 x 2.16, m2 1.99 x 2.16