Skull proportions, excluding the size of the preorbital ‘bar’ (32) : Dinohippus & Pliohippus

Dinohippus and Pliohippus

Dinohippus 11724, 87201, and Pliohippus 12998 have similar proportions (Dino-Plio 1) but only the last one has a well developped POF.

Five other skulls are all different (Dino-Plio 2).

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