Family Heptaxodontidae Anthony 1917 (caviomorph)
Mammalia - Rodentia - Heptaxodontidae
Parent taxon: Chinchilloidea according to A. E. Wood 1958
See also Nowak 1999 and Paula Couto 1956
Sister taxa: Borikenomys, Dinomyidae, Garridomys, Loncolicu, Neoepiblemidae, Niedemys, Saremmys, Ucayalimys
Subtaxa: none
Ecology: ground dwelling herbivore
Distribution: there are no occurrences of Heptaxodontidae in the database