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| Cormohipparion Fossil range: middle Miocene to Pliocene |
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| †Hipparion occidentale |
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†Cormohipparion
†Notiocradohipparion
unassigned
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Cormohipparion is a genus of extinct horse from the Miocene and Pliocene. Cormohipparion arose in North America, along with related genera of three-toed horses (Nannippus, Neohipparion, Pseudhipparion). Approximately 11 ma, a species of Cormohipparion, possibly C. fricki or a close relative, migrated across Beringia to reach the Old World. At the time, advanced horses were absent from the Old World, and Cormohipparion gave rise to a radiation of horses placed in several genera (Cremohipparion, Eurygnathohippus, Hipparion, Hippotherium, Plesiohipparion, Proboscidipparion). A species Cormohipparion itself (C. sinapensis) may occur in Turkey, but this is disputed.
References
- Woodburne, M.O. (2007). "Phyletic diversification Of the Cormohipparion occidentale complex (Mammalia; Perissodactyla, Equidae), late Miocene, North America, and the origin of the Old World Hippotherium datum". Bulletin of the American Museum of Natural History 306 (1): 1-138. doi:.
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