N. American Tertiary, 134

Hyænodontidæ, European Miocene, 118

Hydrochœrus, N. American Post-Pliocene, 130

Hydrornis, European Miocene, 162

Hyohippus, N. American Tertiary, 135

Hyomoschus, European Miocene, 120

Hyopotamus, European Miocene, 119

N. American Tertiary, 137

Hyopsodus, N. American Tertiary, 133

Hyotherium, European Miocene, 119