508 million years ago, a landslide buried a seabed full of now-extinct & very strange marine critters.
— Mika McKinnon (@mikamckinnon) July 7, 2019
The Burgess Shale in the Canadian Rockies is legendary for preserved soft-body fossils & was our first evidence of evolutionary dead ends.
That grin is perfect & I’m jealous: https://t.co/FUmfHdShNF
via Twitter https://twitter.com/mikamckinnon
July 08, 2019 at 03:36AM
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