Both of these factors gave the teeth of " Orohippus " greater grinding ability, suggesting " Orohippus " ate tougher plant material.
2.
Both of these factors gave the teeth of " Orohippus " greater grinding ability, suggesting " Orohippus " ate tougher plant material.
3.
The most dramatic change between " Eohippus " and " Orohippus " was in the teeth : the first of the premolar teeth were dwarfed, the last premolar shifted in shape and function into a molar, and the crests on the teeth became more pronounced.
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