Mammalia - Rodentia - Aplodontidae
Parent taxon: Sciuroidea according to C. Montgelard et al. 2002
See also Carroll 1988, Hopkins 2004, Johnson 1966, Korth et al. 2022, Kurten and Anderson 1980, Nowak 1991, Nowak 1999, Vianey-Liaud et al. 2014 and Wood 1958
Sister taxa: Reithroparamyidae, Sciuridae
Subtaxa: Altasciurus Ameniscomys Ansomyinae Aplodontia Brachygaulus Dakotallomys Leptoromys Liodontia Lophallomys Meniscomyinae Niglarodon Ninamys Oligopetes Paracitellus Plesispermophilus Prosciurinae Prosciurus Pseudaplodon Sciurodon Sewelleladon Tardontia Trigonomys
Ecology: fossorial herbivore
Distribution:
• Quaternary of United States (6: California collections)
• Hemphillian of United States (6: Nevada, Oregon)
• Miocene of China (5), France (1), Germany (2), Kazakhstan (1), Mongolia (3), United States (22: Montana, Nebraska, Nevada, Oregon, Utah)
• Harrisonian of United States (1: Oregon)
• Arikareean of United States (19: California, Idaho, Montana, Nebraska, Nevada, Oregon, South Dakota, Wyoming)
• Oligocene of Canada (3: Saskatchewan), China (12), the Czech Republic (1), France (13), Germany (13), Kazakhstan (3), Mongolia (30), Pakistan (1), Spain (1), Switzerland (1), Turkey (1), United States (71: Colorado, Montana, Nebraska, North Dakota, Oregon, South Dakota, Wyoming)
• Eocene to Oligocene of United States (1: Nebraska)
• Eocene of Canada (7: Saskatchewan), China (1), United States (19: California, Colorado, Montana, Nebraska, North Dakota, Wyoming)
Total: 244 collections including 323 occurrences