†family Cocomyidae de Bruijn et al. 1982 (rodent)
Parent taxon: Ctenodactyloidea according to R. L. Carroll 1988
Sister taxa: Alaymys, Butomys, Chapattimyidae, Chuankueimys, Mergenomys, Stelmomys
Subtaxa: Cocomys
Ecology: ground dwelling herbivore