- Mississippian, Missippian period, Lower Carboniferous, Lower Carboniferous period - from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects
--1 is a kind of period, geological period
--1 is a part of Carboniferous, Carboniferous period - Mississippian - a resident of Mississippi
--2 is a kind of American