Parent taxon: Hystricognathi according to P. Coster et al. 2010
See also Carroll 1988, Huchon and Douzery 2001, Kramarz 2001, MacFadden et al. 1993, Mones and Ojasti 1986, Nowak 1999, Patterson and Wood 1982, Turvey et al. 2015, Vucetich et al. 2015, Vucetich and Verzi 1996 and Wood 1958
Sister taxa: Bathyergidae, Bathyergomorpha, Bugtimys, Cavioidea, Chinchilloidea, Erethizontoidea, Gaudeamuridae, Hodsahibia, Hystricidae, Octodontoidea, Petromuridae, Phiomorpha, Protophiomyinae, Thryonomyidae, Tufamyidae
Subtaxa: Aenigmys Balsayacuy Cachiyacuy Canaanimys Cephalomyidae Chachapoyamys Chambiramys Luribayomys Luribayomys masticator Palmiramys Palmiramys waltheri Pozomys Tacheria Tarapotomys Vucetichimys Zetamyidae
Distribution:
• Quaternary of Argentina (1 collection), Brazil (2), Colombia (1)
• Pliocene of Venezuela (1)
• Miocene to Pliocene of Argentina (1), the Dominican Republic (1)
• Miocene of Argentina (10), Bolivia (1), Chile (2), Ecuador (1), Peru (1)
• Deseadan of Argentina (6), Bolivia (3), Uruguay (1)
• Arikareean of United States (1: Nebraska)
• Oligocene of Argentina (3), Peru (12), Puerto Rico (1), United States (3: Nebraska, Puerto Rico, South Dakota)
• Eocene to Oligocene of Brazil (1), Peru (1)
• Eocene of Mexico (1), Peru (13)
Total: 68 collections including 119 occurrences