Dinosaur Skeleton Exposed in Dinosaur Quarry, Utah

ID: SIA Acc. 12-492 [SIA2012-2788]

Creator: Douglass, Earl 1862-1931

Form/Genre: Lantern slides

Date: 1922

Citation: Smithsonian Institution Archives, Acc. 12-492, Image No. SIA2012-2788

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Large dinosaur skeleton in what is now Dinosaur National Monument being excavated by collectors from the Carnegie Museum of Natural History. The Carnegie Museum excavated in the area between 1909 and 1922, at which time they abandoned operations. The United States National Museum (now the National Museum of Natural History) began excavating in the area in 1923.


  • United States National Museum
  • Carnegie Museum of Natural History
  • United States National Museum Department of Paleontology
  • Century of Progress International Exposition (1933-1934 : Chicago, Ill.)


  • Lantern slide copied from photograph taken by Earl Douglass, Carnegie Museum of Natural History.
  • See Plate 2 in Charles Gilmore's publication, "On a newly mounted skeleton of Diplodocus in the United States National Museum," Proceedings of the United States National Museum No 2941, pages 1-21, 1933.

Cite as

Smithsonian Institution Archives, Acc. 12-492, Image No. SIA2012-2788

Repository Loc.

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



Restrictions & Rights

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  • Quarries and quarrying
  • Fossils


Dinosaur National Monument (Colo. and Utah)


Lantern slides

Local number

SIA Acc. 12-492 [SIA2012-2788]

Physical description

4 x 3.25;

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