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Definition of Cambrian period
1. Noun. From 544 million to about 500 million years ago; marine invertebrates.
Exact synonyms: Cambrian
Group relationships: Paleozoic, Paleozoic Era
Generic synonyms: Geological Period, Period
Group relationships: Paleozoic, Paleozoic Era
Generic synonyms: Geological Period, Period
Lexicographical Neighbors of Cambrian Period
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