Haringtonhippus is a genus of equine from the Pleistocene of North America The genus is monospecific, consisting of the species H. francisci, initially described in 1915 by Oliver Perry Hay as Equus francisci. Prior to the naming of the genus, it was sometimes referred to as the New World stilt-legged horse, in reference to its slender distal limb bones, in contrast with those of contemporary "stout legged" caballine true horses.
In the Series 3 finale "Mammoth's Undertaking Journey II: The Eternal Frontier", a herd of a dozen Haringtonhippus were brought to the park from Late Pleistocene North America 11,000 years ago. They reside in the Mammoth Tundra Enclosure with other ice age animals.
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