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Wiwaxia

Cambrian 16
All photos in this article are by David Coppedge.

Smithsonian Glosses Over the Cambrian Explosion

The nation’s museum cannot ignore the collection of fossils Walcott sent them from the Burgess Shale. But can they explain them away? Read More ›
Kimberella quadrata
Kimberella quadrata
Photo: Dorsal mold of Kimberella quadrata from the Ediacaran of Russia,
showing the cuticular dorsal shield with tubercular nodes and the tapered oral end; by Aleksey Nagovitsyn: Wikimedia, GNU FDL).

Kimberella and Controversial Relationships — A Chronological Synopsis

It is remarkable, indeed, how detailed a medusoid morphology was projected onto Kimberella fossils and later recognized as pure fantasy. Read More ›
Kimberella quadrata
Kimberella quadrata
Image: Kimberella quadrata, by MUSE / CC BY-SA (https://creativecommons.org/licenses/by-sa/3.0).

Kimberella — The Oldest Radula (Not)

There is a strange fact that shows that any interpretation of these trace fossils has to be taken with a grain of salt. Read More ›
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Should There Be a Time Limit for Cambrian Explosion Excuses?

Evolutionary scientists have had 160 years to figure out this dilemma. Read More ›

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