Phenacodontidae
Radinskya
Phenacolophids
Hyracoids
Tethytheres
Orientolophus
Systemodon
Cymbalophus
Cardiolophus
Homogalax
Isectolophus
Lophiodon
Lophiaspis
Eomoropus
Heptodon
Helaletes
Protapirus
Hyrachyus
Triplopus
Paleosyops
Lambdotherium
Lophiotherium
Propalaeotherium
Plagiolophus
Paleotherium
Anchilophus
Pachynolophus
Propachynolophus
Hyracotherium_leporinum
Hallensia
Hyracotherium_sandrae
Hyracotherium_grangeri
Hyracotherium_craspedotum
Xenicohippus_osborni
Xenicohippus_grangeri
Pliolophus
Hyracotherium_montanum
Hyracotherium_venticolum
Orohippus_major
Orohippus_pumilus
Epihippus