Burgess Shale

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Burgess Shale

a bed of Cambrian sedimentary rock in the Rocky Mountains in British Columbia containing many unique invertebrate fossils

Burgess Shale

[¦bər·jəs ′shāl]
(geology)
A fossil deposit in the Canadian Rockies, British Columbia, consisting of a diverse fauna that accumulated in a clay and silt sequence during the Cambrian.
References in periodicals archive ?
THE ROM HOLDS THE LARGEST COLLECTION OF BURGESS SHALE FOSSILS IN THE WORLD, estimated at around 150,000 specimens.