Definition for Revision history of "Cambrian"

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  • (cur | prev) 18:55, 30 September 2013Robertling (Talk | contribs). . (171 bytes) (+171). . (Created page with "The Cambrian is the first geological period of the Paleozoic Era, lasting from 541.0 ± 1.0 to 485.4 ± 1.9 million years ago (mya) and is succeeded by the Ordovician.")