Protorohippus

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Protorohippus
Temporal range: Eocene (Wasatchian)
Fossil from the Green River Formation
Scientific classification Edit this classification
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. montanum Wortman, 18961
Synonyms
  • Hyracotherium venticolum Cope, 1881
  • Hyracotherium vasacciense venticolum Kitts, 1956
  • Eohippus venticolum Granger, 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]

Palaeobiology

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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]

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

See also

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References

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