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Sifrhippus

genus

Sensitive Classification

Fossils are sensitive in nature and should not be collected unless it is done legally and responsibly. Vertebrate fossils are illegal to collect on public lands.

On the Web

On Wikipedia

Sifrhippus is an extinct genus of equid containing the species S. sandrae and S. grangeri. Sifrhippus is the oldest known equid, living during the early Eocene. Its fossils were discovered in the Bighorn Basin of Wyoming. A 2012 study found Arenahippus to be synonymous with Sifrhippus.

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Range Map

Range Maps show field notes recorded by Natural Atlas contributors and other datasets via GBIF.org

Formations Found In

Willwood Formation

135 Observations

Willwood Formation (WYTwl;0)

135 Observations

Fort Union Formation (WYTfu;0)

11 Observations

Fort Union Formation

11 Observations

Alluvium and Colluvium (WYQa;0)

10 Observations

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Sifrhippus

Sifrhippus

Sifrhippus