burgess shale








noun

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

  1. A rock formation in the western Canadian Rockies that contains numerous fossilized invertebrates from the early Cambrian Period.

A famous rock formation in the western Canadian Rockies, containing unusually well-preserved fossil invertebrates of the early Cambrian Period (from about 540 million years ago). The Burgess Shale fossils provide valuable information about the evolution of early life on Earth.

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