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Generic development of the horse's foot. A, Foot of Eohippus; B, That of Orohippus; C, That of Hipparion; D, that of horse. The digits are numbered, when present, I. to V.

Evolution of Horse Foot

Generic development of the horse's foot. A, Foot of Eohippus; B, That of Orohippus; C, That of Hipparion;…

"Successive stages of modification of the feet of extinct forms of horse-like animals, showin gradual reduction of the outer and enlargement of the middle toe (III). Hipparion and Pliohippus (Pliocene)." — Encyclopedia Britannica, 1893

Horse Foot

"Successive stages of modification of the feet of extinct forms of horse-like animals, showin gradual…