perissodactyla(n = noun.animal) order perissodactyla - nonruminant ungulates: horses; tapirs; rhinoceros; extinct forms;
is a kind of animal order
is a member of eutheria, subclass eutheria
A division of ungulate mammals, including those that have an odd number of toes, as the horse, tapir, and rhinoceros; -- opposed to Artiodactyla. [1913 Webster]