Found 2 items, similar to Lower Carboniferous period.
English → English (WordNet) Definition: Lower Carboniferous period Lower Carboniferous period n : from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects [syn: Mississippian, Missippian period, Lower Carboniferous]
English → English (gcide) Definition: Lower Carboniferous period Mississippian \Mississippian\ prop. n. 1. 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. [WordNet 1.5] 2. A resident of Mississippi. [WordNet 1.5]