200 A., 'Echippus' (Eocene), 300 A., Miohippus (Oligocene), 400 A., Merychippus (Miocene),
500 A., Pliohippus (Pliocene), 600 A., Equus (Pleistocene).
Issue date: 5-th of November.
| C a t a l o g u e n u m b e r s | |||
 |
1695-1699 |  |
|
 |
1512-1516 |  |
1418-1422 |
'Echippus' is a misspelling of Eohippus, which in turn is synonymous with Hyracotherium.
