Animals from the Cambrian

A rare combination of conditions allowed the remains of marine fossils from 500 million years ago to be captured and preserved in the Burgess Shale. These unusual specimens of ancient sea life were discovered near the town of Field in what is now Yoho National Park.

The Burgess Shale fossils are special in both their age and how well-preserved they are. Stephen Jay Gould's book "Wonderful Life" describes the discovery and evolving scientific views of these unusual specimens.

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