Mammalia - Rodentia - Cylindrodontidae
Parent taxon: Rodentia according to W. W. Korth et al. 2022
See also Carroll 1988, Lofgren et al. 2020, Rose et al. 2012 and Wood 1958
Sister taxa: Alagomyidae, Allactagidae, Allomyidae, Anomalomyidae, Anomaluroidea, Aplodontoidea, Archetypomyidae, Callodontomys, Castorimorpha, Cavina, Cercolabidae, Conilurus, Ctenohystrica, Dolosimus, Downsimys, Echinomyidae, Ectropomys, Entoptychidae, Epeiromys, Eryomyidae, Eryomyina, Florentiamyidae, Gliroidea, Homocentrus, Hystricognatha, Ischyromyidae, Ischyromyiformes, Ivanantonia, Megacricetodontidae, Muriformia, Mylagaulidae, Myodonta, Myomorpha, Pairomys, Paramyidae, Petauristidae, Pipestoneomyidae, Protrogomorpha, Pseudomys, Quercymys, Remyidae, Sciurognathi, Sciuroidea, Sciuromorpha, Siphneidae, Taeniodus, Theridomyoidea, Yuomyidae, Zamoramys, Zelomyidae
Subtaxa: Anomoemys Ardynomys Cylindrodon Dawsonomys Gobiocylindrodon Jaywilsonomys Orientocylindrodon Pareumys Proardynomys Pseudocylindrodon Sespemys Siouxlindrodon Tuscahomys
Ecology: ground dwelling herbivore
Distribution:
• Oligocene of China (6 collections), Georgia (1), Mongolia (7), United States (2: California, Montana)
• Eocene to Oligocene of China (1), United States (1: Nebraska)
• Eocene of Canada (10: British Columbia, Saskatchewan), China (4), Kazakhstan (1), Mexico (1), Mongolia (4), United States (139: California, Colorado, Mississippi, Montana, Nebraska, New Mexico, North Dakota, Texas, Utah, Wyoming)
Total: 177 collections including 207 occurrences