Carboniferous_periodWordNet Explorer
Explore synonyms, antonyms, hypernyms, hyponyms, and semantic relationships for “Carboniferous_period” powered by Princeton WordNet.
noun
from 345 million to 280 million years ago
Words in this synset: Carboniferous
noun
from 544 million to about 230 million years ago
noun
from 310 million to 280 million years ago; warm climate; swampy land
noun
from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects