Mammalia - Rodentia - Heteromyidae
Synonym: Perognathoides Wood 1935
Full reference: A. E. Wood. 1935. Evolution and relationships of the heteromyid rodents with new forms from the Tertiary of western North America. Annals of the Carnegie Museum 24:73-262
Parent taxon: Heteromyidae according to A. E. Wood 1935
Sister taxa: Balantiomys, Chaetodipus, Dikkomys, Dipodomys, Eodipodomys, Harrymys, Heteromyinae, Lignimus, Liomys, Mioheteromys, Mookomys, Oregonomys, Peridiomys, Perodipus, Perognathus, Prodipodomys, Proheteromys, Schizodontomys, Stratimus, Trogomys
Subtaxa: Cupidinimus avawatzensis, Cupidinimus bidahochiensis, Cupidinimus boronensis, Cupidinimus cuyamensis, Cupidinimus halli, Cupidinimus lindsayi, Cupidinimus magnus, Cupidinimus nebraskensis, Cupidinimus prattensis, Cupidinimus smaragdinus, Cupidinimus tertius, Cupidinimus whitlocki, Perognathoides eurekensis, Perognathoides kleinfelderi, Perognathoides quartus
Type: Cupidinimus nebraskensis
Ecology: ground dwelling granivore-browser