English noun: Lower Carboniferous | |||
1. | Lower Carboniferous (time) from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects | ||
Synonyms | Lower Carboniferous period, Missippian period, Mississippian | ||
Instance hypernym | geological period, period | ||
Part meronym | Carboniferous, Carboniferous period | ||