Selkirkia columbia. Illustration of Selkirkia columbia, a worm-like animal known from fossils in the Burgess Shale site (508 million years old) in Bri

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Selkirkia columbia. Illustration of Selkirkia columbia, a worm-like animal known from fossils in the Burgess Shale site (508 million years old) in British Columbia, Canada. The Burgess Shale fossil site records a key moment in Earth's history, the Cambrian Explosion, when an unprecedented period of evolution produced a wide diversity of body types, including those of today's animals.

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Size: 2362px × 3780px
Photo credit: © JOHN SIBBICK/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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