Osteichthyes - Amblypteriformes - Coccocephalichthyidae
Parent taxon: Rodentia according to C. Montgelard et al. 2002
See also Carroll 1988
Sister taxa: Alagomyidae, Allactagidae, Anomalomyidae, Anomaluroidea, Aplodontiidae, Aplodontoidea, Archetypomyidae, Callodontomys, Cavina, Cercolabidae, Conilurus, Ctenohystrica, Cylindrodontidae, Dolosimus, Downsimys, Echinomyidae, Ectropomys, Entoptychidae, Epeiromys, Eryomyidae, Eryomyina, Gliroidea, Homocentrus, Hystricognatha, Hystricomorpha, Ischyromyidae, Ischyromyiformes, Ivanantonia, Megacricetodontidae, Muriformia, Mylagaulidae, Myodonta, Pairomys, Paramyidae, Petauristidae, Pipestoneomyidae, Protrogomorpha, Pseudomys, Quercymys, Remyidae, Sciurognathi, Sciuromorpha, Siphneidae, Supramyomorpha, Taeniodus, Theridomyoidea, Yuomyidae, Zamoramys, Zelomyidae
Subtaxa: Reithroparamyidae
Ecology: ground dwelling herbivore
Distribution:
• Eocene of United States (24: California, Colorado, Nevada, North Dakota, Utah, Wyoming collections)
• Paleocene of United States (1: Wyoming)
Total: 25 collections including 30 occurrences