Protorohippus
| Protorohippus Temporal range: Eocene (Wasatchian)
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| Fossil from the Green River Formation | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Perissodactyla |
| Family: | Equidae |
| Genus: | †Protorohippus Wortman, 1896 |
| Type species | |
| Protorohippus venticolum (Cope, 1881)
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| Species | |
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| Synonyms | |
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Protorohippus (Latin: "before" (pro), + Greek: "mountain" (oros), "horse" (hippos)[1]) is an extinct genus of equid that lived in the Eocene of North America.[2]
Palaeobiology
[edit]Based on oxygen and carbon isotope analysis of the teeth of P. montanum, the species is believed to have had two distinct birth seasons per year, a result of the diminished seasonality during the Early Eocene. It is possible that this phenomenon held for other early equids as well.[3]
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See also
[edit]
References
[edit]- ^ "Glossary. American Museum of Natural History". Archived from the original on 20 November 2021.
- ^ Froehlich, D. J. (2002). "Quo vadis eohippus? The systematics and taxonomy of the early Eocene equids (Perissodactyla)". Zoological Journal of the Linnean Society. 134 (2): 141–256. doi:10.1046/j.1096-3642.2002.00005.x.
- ^ D’Ambrosia, Abigail R.; Clyde, William C.; Fricke, Henry C.; Chew, Amy E. (15 November 2014). "Stable isotope patterns found in early Eocene equid tooth rows of North America: Implications for reproductive behavior and paleoclimate". Palaeogeography, Palaeoclimatology, Palaeoecology. 414: 310–319. Bibcode:2014PPP...414..310D. doi:10.1016/j.palaeo.2014.09.014. Retrieved 21 February 2025 – via Elsevier Science Direct.
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