pleistocene

English Thesaurus

1. from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution (noun.time)

instance hypernym	:	epoch,
definition	:	a unit of geological time that is a subdivision of a period and is itself divided into ages (noun.time)

part meronym	:	age of man, quaternary, quaternary period,
definition	:	last 2 million years (noun.time)