Burgess Shale Evolutionary Tree

The Burgess Shale is a fossil-bearing deposit exposed in the Canadian Rockies of British Columbia, Canada. It is famous for the exceptional preservation of the soft parts of its fossils. At 508 million years old, it is one of the earliest fossil beds containing soft-part imprints.
  • Unit of: Stephen Formation
  • Thickness: 161 meters (528 ft)
  • Primary: Shale
  • Region: Yoho National Park and Kootenay National Park
  • Country: Canada
  • Named for: Burgess Pass
  • Named by: Charles Doolittle Walcott, 1911
Data from: en.wikipedia.org