Hypselodont, [48]

Hypsiprymninae, [131]

Hypsiprymnodon, [138];

H. moschatus, [138]

Hypsiprymnodonitinae, [138]

Hyrachyus, [262];

H. agrarius, [262]

Hyracodon, [146], [262];

H. nebrascensis, [260]

Hyracodontotherium, [333]