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, Maquiamys, Microscleromys, Neoepiblemidae, Niedemys, Saremmys, Ucayalimys
Subtaxa: Amblyrhiza Clidomys Elasmodontomys Quemisia Xaymaca
Ecology: ground dwelling herbivore
Distribution:
• Quaternary of the Dominican Republic (1 collection), French Southern Territories (1), Jamaica (3), Puerto Rico (1)
Total: 6 collections each including a single occurrence