Palæochœus, European Miocene, 119
Palæohierax, European Miocene, 162
Palæolagus, N. American Tertiary, 140
Palæolama, S. American Pliocene, 147
Palæomephitis, European Miocene, 118
Palæomeryx, European Miocene, 120
Palæomys, European Miocene, 121
Palæontina oolitica, Oolitic insect, 167
Palæontology, 107
how best studied in its bearing on geographical distribution, 168