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Definition of Missippian period
1. Noun. From 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects.
Exact synonyms: Lower Carboniferous, Lower Carboniferous Period, Mississippian
Group relationships: Carboniferous, Carboniferous Period
Generic synonyms: Geological Period, Period
Group relationships: Carboniferous, Carboniferous Period
Generic synonyms: Geological Period, Period