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Definition of Permian period
1. Noun. From 280 million to 230 million years ago; reptiles.
Exact synonyms: Permian
Group relationships: Paleozoic, Paleozoic Era
Generic synonyms: Geological Period, Period
Group relationships: Paleozoic, Paleozoic Era
Generic synonyms: Geological Period, Period
Lexicographical Neighbors of Permian Period
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