quaternary period

1. Last 2 million years (synset 115149497)
   is an instance of: geological period, period - a unit of geological time during which a system of rocks formed
   has:

   • holocene, holocene epoch, recent, recent epoch - approximately the last 10,000 years
   • glacial epoch, pleistocene, pleistocene epoch - from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution
   is a part of: age of mammals, cenozoic, cenozoic era - approximately the last 63 million years
   same as: age of man, quaternary

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