The Collaborative International Dictionary
Missippian period
Mississippian \Mississippian\ prop. n.
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A geological period extending from from 310 million to 345 million years ago; it was associated with an increase of land areas, the presence of primitive ammonites, and emergence of winged insects; called also Missippian period and Lower Carboniferous period.
Syn: Missippian period, Lower Carboniferous, Lower Carboniferous period.
A resident of Mississippi.