Ancestor
Triplopus_cubitalis
Hyrachyus_eximius
Siamolophus_krabiense
Rhodopagus_radinskyi
Heptodon
Helaletes_nanus
Dilophodon
Desmatotherium_intermedium
Protapirus
Plesiocolopirus
Colodon_inceptus
Colodon_occidentalis
Irdinolophus_mongoliensis
Teleolophus
Irdinolophus_tuiensis