Parent taxon: Ctenohystrica according to P. Coster et al. 2010
See also Carroll 1988 and Huchon and Douzery 2001
Sister taxa: Ctenodactyloidea, Pseudoneoreomys, Viscacidae, Coendidae, Hystricognathi, Paradoxomyidae
Subtaxa: Diamantomyidae Diamantomys Kahawamys Kenyamyidae Lavocatomys Metaphiomys Monamys Myophiomyidae Petromuridae Phiomyoides Prepomonomys Simonimys Thryonomyidae
Ecology: ground dwelling herbivore
Distribution:
• Quaternary of the Congo-Kinshasa (4 collections), Cote D'Ivoire (1), Ethiopia (8), Kenya (9), Niger (2), South Africa (2), Sudan (2), Swaziland (1), Tanzania (4), Zambia (2)
• Pliocene to Pleistocene of Ethiopia (1), Kenya (2)
• Pliocene of Ethiopia (2), Kenya (1)
• Miocene to Pliocene of Ethiopia (1), Kenya (1), Tanzania (1)
• Miocene to Pleistocene of Ethiopia (1)
• Miocene of Ethiopia (1), Kenya (16), Libya (3), Namibia (3), Pakistan (6), Saudi Arabia (2), South Africa (1), Uganda (3), the United Arab Emirates (4)
• Oligocene of Egypt (5), Kenya (2), Libya (3), Morocco (2), Oman (2), Tanzania (2)
• Eocene of Libya (2), Namibia (4)
Total: 106 collections including 159 occurrences