Protorohippus

Last updated

Protorohippus
Temporal range: Eocene (Wasatchian)
Protorohippus Green River Formation.jpg
Fossil from the Green River Formation
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla
Family: Equidae
Genus: Protorohippus
Wortman, 1896
Type species
Protorohippus venticolum
(Cope, 1881)
Species
  • P. venticolum(Cope, 1881)
  • P. montanumWortman, 18961
Synonyms
  • Hyracotherium venticolumCope, 1881
  • Hyracotherium vasacciense venticolumKitts, 1956
  • Eohippus venticolumGranger, 1908

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]

Contents

Palaeobiology

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]

Restoration by Charles R. Knight The American Museum journal (c1900-(1918)) (17536793244).jpg
Restoration by Charles R. Knight
Skeleton cast Hyracotherium vasacciense venticolum.JPG
Skeleton cast

See also

References

  1. "Glossary. American Museum of Natural History". Archived from the original on 20 November 2021.
  2. 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 .
  3. 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. doi:10.1016/j.palaeo.2014.09.014 . Retrieved 21 February 2025 via Elsevier Science Direct.