Search Result：lower carboniferous period
lower carboniferous period 
(TTS Sound)
(TTS Sound)Overview of noun lower_carboniferous_period
The noun lower carboniferous period has 1 sense
- Mississippian, Missippian period, Lower Carboniferous, Lower Carboniferous period -- (from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects)