Loading page
upper carboniferous period is a noun meaning "from 310 million to 280 million years ago; warm climate; swampy land". It carries one recorded sense.
from 310 million to 280 million years ago; warm climate; swampy land
Definitions, synonyms and semantic relations for upper carboniferous period come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.