Acritohippus isonesus (extinct)
Variant names:
 Hipparion isonesum
 Hippotherium isonesus
 Merychippus isonesus
 Neohipparion isonesum
 Stylonus isonesus

Latitudinal range: 43.5° to 43.6°
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Found in two samples

United States: Red Basin (UOloc 2495) (Middle Miocene), Skull Spring (Middle Miocene)

See also Acritohippus