Quaternary_periodWordNet Explorer
Explore synonyms, antonyms, hypernyms, hyponyms, and semantic relationships for “Quaternary_period” powered by Princeton WordNet.
noun
last 2 million years
noun
approximately the last 63 million years
noun
approximately the last 10,000 years
noun
from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution