Was Spriggina an Evolutionary Ancestor of Arthropods?

Allison C. Daley, arthropods, bilateral symmetry, Cambrian Explosion, Cambrian News, Darwin's Doubt, Ediacaran Period, Evolution, fossil record, genetic evidence, Greg Edgecombe, Günter Bechly, Intelligent Design, Mark McMenamin, Marten Scheffer, neo-Darwinian mechanisms, paleontology, Precambrian fossil, Princeton University Press, Science Uprising, Simon Conway Morris, Spriggina, Stephen Meyer, Sven Jorgen Birket-Smith
For those wedded to an evolutionary interpretation of life’s history, the fossil and genetic evidence leave the origin of arthropods a major mystery.  Source
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Darwin’s “Abominable Mystery” Is Not Alone: Gaps Everywhere!

abominable mystery, animal phyla, Big Bangs, Cambrian Explosion, Charles Darwin, Critical Transitions in Nature and Society, Darwin's Doubt, discontinuities, Ediacaran fauna, Epigenetic Mechanisms of the Cambrian Explosion, Evolution, evolutionary biologists, fossil record, Marten Scheffer, Nelson Cabej, paleontologists, Princeton University Press, Spinosa Award, Stephen Meyer, U.S. National Academy of Sciences, undersampling
There is clearly a pattern of discontinuities that requires an adequate explanation, and Darwinism is not it. Source
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