Evolution & life

Charles Walcott discovers the Burgess Shale

30 August 1909

On 30 August 1909, according to tradition, Charles Doolittle Walcott, secretary of the Smithsonian Institution, found fossils of a strange shrimp-like animal in a loose slab of dark shale on a ridge between Mount Field and Wapta Mountain in the Canadian Rockies in British Columbia. Returning in 1910 and later he collected some 65,000 specimens from a layer 508 million years old. The Burgess Shale preserves the soft parts of Cambrian animals, such as Opabinia, with five eyes, and the predator Anomalocaris, in extraordinary detail. They made the Cambrian explosion known and were re-examined in the 1970s, as celebrated in Stephen Jay Gould's Wonderful Life.

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