Phanerozoic-Cryptozoic and Related Transitions: New Evidence

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Science  11 Nov 1966:
Vol. 154, Issue 3750, pp. 766-770
DOI: 10.1126/science.154.3750.766


The fossil Pteridinium, a distinctive component of a worldwide early metazoan (Ediacaran)assemblage, is provisionally recorded from probable early Cambrian strata in eastern California. In context with other evidence, this finding implies a Cambrian age for the Ediacaran fauna and approximate coincidence of limits between Phanerozoic-Cryptozoic, Paleozoic-Precambrian, and Cambrian-Precambrian.