English
Detailed Synonyms for Pennsylvanian period in English
Pennsylvanian period:
Pennsylvanian period [the ~] nom
-
the Pennsylvanian period
– from 310 million to 280 million years ago; warm climate; swampy land 1the Pennsylvanian period; the Upper Carboniferous; the Upper Carboniferous period; the Pennsylvanian– from 310 million to 280 million years ago; warm climate; swampy land 1