†family Simimyidae Wood 1980 (rodent)
Mammalia - Rodentia - Simimyidae
Parent taxon: Dipodoidea according to R. L. Carroll 1988
Sister taxa: Dipodidae, Zapodidae
Subtaxa: Simimys
Ecology: ground dwelling herbivore
Distribution:
• Eocene of United States (40: California, Nebraska, Texas, Utah collections)
Total: 40 collections including 41 occurrences