Phenacodontidae

Radinskya

Phenacolophids

Tethytheres

Hyracoids

Cardiolophus

Homogalax

Isectolophus

Heptodon

Helaletes

Triplopus

Hyrachyus

Protapirus

Lophiodon

Eomoropus

Lophiaspis

Orientolophus

Cymbalophus

Systemodon

Paleosyops

Lambdotherium

Pachynolophus

Propachynolophus

Hyracotherium_leporinum

Hallensia

Hyracotherium_sandrae

Hyracotherium_grangeri

Pliolophus

Hyracotherium_montanum

Hyracotherium_venticolum

Orohippus_major

Epihippus

Orohippus_pumilus

Hyracotherium_craspedotum

Xenicohippus_grangeri

Xenicohippus_osborni

Lophiotherium

Propalaeotherium

Plagiolophus

Anchilophus

Paleotherium