To illustrate how the horse foot changed through time, a human hand can be used for comparison.Note how the distance of the wrist bones from the ground changes. |
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| 5 toes (ancestral mammals) | 4 toes on ground (eohippus stage) | 4 toes, 3 toes on ground, 1 raised above (Epihippus stage) | 3 toes (Mesohippus stage) | 1 toe (Equus stage) | ||
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