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Ceratomorpha (superorder Mesaxonia, order Perissodactyla) A suborder of mammals that comprises the superfamilies Tapiroidea and Rhinocerotoidea (fossil and recent Old and New World tapirs and rhinoceroses), perissodactyls in which the nasal bones are stout and projecting, the cheek teeth are low-crowned, and the limbs are short and thick, with three digits on the hind feet and three or four on the fore feet. Rhinoceroses, but never tapirs, may have horns.

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Ceratomorpha

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