Excavations at the fossil bed, Hagerman Fossil Beds National Monument, 2015.

The fossil beds at Hagerman National Monument are most famous for the abundance of fossilized and well-preserved Equus simplicidens skeletons, known as the Hagerman horse, Hagerman zebra or American zebra. Over 200 individuals have been excavated from the Horse Quarry since fossils were first discovered in 1928 by a local rancher. This is the highest concentration of E. simplicidens in North America! Like its modern living relative, E. simplicidens was a single-toed horse. It lived and thrived on the grasslands of North America several million years ago in the Pliocene epoch and is one of the oldest members of its genus.

fossil preservation excavation preserved wild wildlife fossils history historical paleontology paleontological science scientist formation fossil green river formation green river formation fossils hagerman fossil beds national monument north america simplicidens hagerman horse hagerman national monument hagerman zebra equus simplicidens skeletons horse quarry horse american zebra million years pliocene epoch national parks gallery national monuments idaho

1928

National Parks Gallery

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