Mississippian
1. from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects • Syn: Missippian period, Lower Carboniferous, Lower Carboniferous period • Instance Hypernyms: period, geological period • Part Holonyms: Carboniferous, Carboniferous period 2. a native or resident of Mississippi • Hypernyms: American
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