Parent taxon: Tapiromorpha according to L. T. Holbrook and J. Lapergola 2011
See also Carroll 1988, Cattoi 1957, Colbert 2005, Colbert 2006, Dashzeveg 1996, Ducrocq et al. 2006, Eberle 2005, Ferrusquia-Villafranca 1969, Holanda et al. 2011, Holbrook 1999, Holbrook et al. 2004, Hooker and Dashzeveg 2004, McKenna 1975, Prothero 2005, Prothero and Schoch 1989, Sahni and Khare 1971, Sahni and Khare 1973, Schoch 1984 and Tsoukala 2018
Sister taxa: Ancylopoda, Breviodontidae, Cardiolophus, Homogalax, Isectolophidae, Isectolophus, Kalakotia, Lophialetidae, Rhodopagidae, Systemodon, Rhinotapiromorpha, Isectolophomorpha
Subtaxa: Breviodon Deperetellidea Fouchia Karagalax Lophialetidea Parabreviodon Rhinocerotoidea Schizotheroides Selenaletes Tapiridea Tapiroidea