Cambrian News Latest News. 8 million to 485. The Cambrian lasted 51. The Cambrian is th

8 million to 485. The Cambrian lasted 51. The Cambrian is the first geological period of the Paleozoic Era, and the Phanerozoic Eon. Oct 28, 2012 · The Cambrian* Period begins the Phanerozoic Eon, the last 542 million years during which fossils with hard parts have existed. 95 million years from the end of the preceding Ediacaran period 538. Learn more about a time period marked by an intense burst of evolution. During these ice ages, the decrease in global temperature led to mass extinctions. It is the first division of the Paleozoic Era (542Ma -251Ma). Many geologic and climatic events also occurred during this period. 4 million years ago.

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