| Answer | Crossword Clue |
|---|---|
| mesohippuses | MESOHIPPUS, an extinct mammal of the Horse family |
| mesohippus | an extinct mammal of the Horse family |
| donkey | A domesticated hoofed mammal of the horse family with long ears and a braying call, used as a beast of burden; an ass |
| donkeys | A domesticated hoofed mammal of the horse family with long ears and a braying call, used as a beast of burden; an ass |
| horse | recent or extinct animal (as a zebra, ass, or onager) of the horse family |
| creodonts | An extinct carnivorous mammal of the early Tertiary period, ancestral to modern carnivores |
| quaggas | an extinct mammal (Equus quagga) of southern Africa that resembled and was related to the zebras |
| quagga | an extinct mammal (Equus quagga) of southern Africa that resembled and was related to the zebras |
