Lower Carboniferous period
Also found in: Thesaurus.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Switch to new thesaurus
Noun | 1. | Lower Carboniferous period - from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects Carboniferous, Carboniferous period - from 345 million to 280 million years ago |
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.