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Canadian Rockies (this is Banff). Location of the continents 540 million years ago. Wolcott quarry at the Burgess shale. Wolcott quarry at the Burgess shale. Dunkleosteus (this is mine). Petrified Forest (Arizona). Fossilized corkscrew beaver’s burrow. Charles Wolcott at the Burgess Shale.
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