"Beginning at the base of the Cambrian period and extending for about 10 million years, all the major groups of skeletonized invertebrates made their first appearance in the most spectacular rise in diversity ever recorded on our planet."
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Original Language: English
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Sources
Salvador E. Luria, Stephen Jay Gould and Sam Singer, A View of Life, pp. 638.
https://en.wikiquote.org/wiki/Fossil
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Fossil
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