PaleoDB taxon number: 363768
Alternative spelling: Hystrichomorpha
Parent taxon: Rodentia according to R. Sostillo et al. 2014
Sister taxa: Alagomyidae, Allactagidae, Allomyidae, Anomalomyidae, Anomaluroidea, Aplodontoidea, Archetypomyidae, Callodontomys, Castoroidea, Cavina, Cercolabidae, Conilurus, Ctenohystrica, Cylindrodontidae, Diatomyidae, Dolosimus, Downsimys, Echinomyidae, Ectropomys, Epeiromys, Eryomyidae, Eryomyina, Geomorpha, Geomyoidea, Gliridae, Gliroidea, Homocentrus, Hystricognatha, Ischyromyidae, Ivanantonia, Megacricetodontidae, Muriformia, Mylagaulidae, Myodonta, Myomorpha, Pairomys, Paramyidae, Petauristidae, Protrogomorpha, Pseudomys, Quercymys, Remyidae, Sciurognathi, Sciuroidea, Sciuromorpha, Siphneidae, Taeniodus, Theridomyoidea, Yuomyidae, Zamoramys, Zapodidae, Zelomyidae
Subtaxa: Coendidae, Hystricognathi, Paradoxomyidae, Pseudoneoreomys, Viscacidae