Diadiaphorus majusculus (Ameghino 1887; Hatcher and Scott 1910; Miocene, 10mya; 1.2 m long) was a horse-mimicw with only one hoof contacting the substrate. It was basal to hyraxes, manatees and elephants sharing premaxillary tusks with clade members.
Proterotherium is a related taxon. |