Florida Museum of Natural History

Look at how the bones in horse feet have changed over time.

They became longer and more streamlined, enabling horses to run faster to avoid predators.

mya = million years ago

Hyracotherium toe bones Miohippus toe bones Merychippus toe bones Equus toe bones
Hyracotherium
55 - 45 mya
Miohippus
33 - 29 mya
Merychippus
17 - 11 mya
Equus
5 mya


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