where the fossils were discovered, called the Hagerman Horse Quarry, was excavated and three tons of specimens were sent back to the Smithsonian in Washington, D.C.

Excavation of the fossils continued into the early 1930s. The Hagerman Horse Quarry floor grew to 5000 sqft with a backwall 45 ft high. Ultimately five nearly complete skeletons, more than 100 skulls, and forty-eight lower jaws as well as numerous isolated bones were found. Gidley believed that such a large amount of fossils found