English dictionary
upper carboniferous period meaning and definition
Definition and meaning of upper carboniferous period at MeaningMonkey.org. upper carboniferous period meaning and definition in the English Dictionary.UPPER CARBONIFEROUS PERIOD noun
Definition of Upper Carboniferous period (noun)
- from 310 million to 280 million years ago; warm climate; swampy land
- synonyms: Pennsylvanian, Pennsylvanian period, Upper Carboniferous
Source: Princeton University Wordnet