science · 22 December 1887 · 137 years ago
death
Died 22 Dec 1887 at age 58 (born 7 Sep 1829).
American geologist and explorer of the U.S. West. After finishing a medical school training (1853), his early career began in paleontology for James Hall, collecting fossils in the Badlands and the Upper Missouri Valley. It is believed he made the first North American discovery of dinosaur remains (1854) during this expedition. During the Civil War, he served as a surgeon in the Civil War, after which he resumed his western explorations. His work in the Great Plains and Rocky Mountains helped lay the foundation of the U.S. Geological Survey. Hayden is credited with having the Yellowstone geyser area declared the first national park (1872). He hosted the Western botanical journey of Gray and Hooker in 1877.
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