Pachydermata n. pl. (Zool.) A group of hoofed mammals distinguished for the thickness of their skins, including the elephant, hippopotamus, rhinoceros, tapir, horse, and hog; the pachyderms. It is now considered an artificial group.
... regions on the banks of the rivers from Demerara, across the Brazils, to Paraguay, the long-nosed tapir has its range. It and the peccary are the only two Pachydermata, or thick-skinned animals, indigenous to the southern continent. It is considered one of the links which connect the elephant and rhinoceros to the swine; its habits, indeed, are somewhat similar ... — The Western World - Picturesque Sketches of Nature and Natural History in North - and South America • W.H.G. Kingston
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