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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;…

"Feet of horse and its predecessors. 1, Palaeotherium; 2, Anchitherium; 3, Hippotherium; 4, Equus." -Thomson, 1916

Horse Feet

"Feet of horse and its predecessors. 1, Palaeotherium; 2, Anchitherium; 3, Hippotherium; 4, Equus."…

Posterior view of phalanges of a horse disarticulated. Labels: a, os suffraginis; b, os coronae; C, os pedis; D, os naviculare, or third sesamoid; 1, glenoid cavities joined by the groove, 2; 3, rough surface for V-shaped sesamoidean ligament; 4, condyles articulating with cavities, 5; 6, condyles of coronae articulating with glenoid cavities of pedal bone, 7; 8, pyramidal process; 9, basilar process; 10, retrosal processes; 11, articular surfaces between navicular and pedal bones; 12, surface, continues with glenoid cavities, 7; 13, posterior edge; 14, extremities for lateral ligaments of navicular bone.

Phalanges of a Horse

Posterior view of phalanges of a horse disarticulated. Labels: a, os suffraginis; b, os coronae; C,…

Bones of left tarsus of a horse, seen from in front and outside. Labels: 1, calcaneum; 2, astragalus; 3, cuneiforme magnum; 4, cuneiforme medium; 5, cuboid.

Tarsus of a Horse

Bones of left tarsus of a horse, seen from in front and outside. Labels: 1, calcaneum; 2, astragalus;…