cenozoic era

English Thesaurus

1. approximately the last 63 million years (noun.time)

instance hypernym	:	era, geological era,
definition	:	a major division of geological time; an era is usually divided into two or more periods (noun.time)

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

part holonym	:	tertiary, tertiary period,
definition	:	from 63 million to 2 million years ago (noun.time)

part meronym	:	phanerozoic, phanerozoic aeon, phanerozoic eon,
definition	:	the period from about 5,400 million years ago until the present (noun.time)