Fossil Horse Quarry Near Hagerman, Idaho, Worked by National Museum

ID: SIA Acc. 12-492 [SIA2012-2783]


Form/Genre: Lantern slides

Date: 1930

Citation: Smithsonian Institution Archives, Acc. 12-492, Image No. SIA2012-2783

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Smithsonian's fossil horse quarry near Hagerman, Idaho, as it appeared in 1930 from a vantage point across a small canyon. (The quarry is on the upper slope of the hill in the foreground of the image.) The Smithsonian excavated in the area between 1929 and 1934, and eventually recovered more than 130 skulls, numerous associated jaws, and enough bones for 10 complete skeletons of the Pliocene fossil horse Plesippus shoshonensis (now known as Equus simplicidens).


  • Gidley, James Williams 1866-1931
  • United States National Museum
  • United States National Museum Department of Paleontology
  • Century of Progress International Exposition (1933-1934 : Chicago, Ill.)


  • See also SIA2017-038194.
  • See Figure 29 in J. W. Gidley's 1930 publication "Continuation of the Fossil Horse Round-up on the Old Oregon Trail," Explorations and Field-Work of the Smithsonian Institution in 1930, pages 33-40.
  • See also Record Unit 424, Box 7, Folder (mini box) 21.

Cite as

Smithsonian Institution Archives, Acc. 12-492, Image No. SIA2012-2783

Repository Loc.

Smithsonian Institution Archives Capital Gallery, Suite 3000, MRC 507; 600 Maryland Avenue, SW; Washington, DC 20024-2520



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  • Quarries and quarrying
  • Fossils


Hagerman (Idaho)


Lantern slides

Local number

SIA Acc. 12-492 [SIA2012-2783]

Physical description

4 x 3.25;

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