Perissodactyla
Order within Mammalia
Amynodontidae
Brontotheridae
Brontotheriidae
Chalicotheriidae
Deperetellidae
Eggysodontidae
Eomoropidae
Equidae
Helaletidae
Hyrachyidae
Hyracodontidae
Indolophidae
Isectolophidae
Lophiodontidae
Palaeotheriidae
Paraceratheriidae
Rhinocerotidae
Tapiridae