†family Florentiamyidae Wood 1936 (rodent)
Mammalia - Rodentia - Florentiamyidae
Parent taxon: Geomyoidea according to R. L. Carroll 1988
Sister taxa: Eomyidae, Geomyidae, Griphomys, Heliscomyidae, Heteromyidae, Hydentomys
Subtaxa: Ecclesimus Fanimus Florentiamys Hitonkala Kirkomys Sanctimus
Ecology: ground dwelling herbivore
Distribution:
• Miocene of United States (5: Nebraska, South Dakota collections)
• Harrisonian of United States (6: Nebraska)
• Arikareean of United States (20: California, Nebraska, Oregon, South Dakota, Wyoming)
• Oligocene of Canada (2: Saskatchewan), United States (24: Colorado, Florida, Nebraska, South Dakota)
Total: 57 collections including 69 occurrences