The definition :
Definitions of Glacial epoch:
- noun: from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution
- noun: any period of time during which glaciers covered a large part of the earth's surface
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:arctic cold freezing frigid frosty frozen gelid icy polar wintry drumlin glaciated :date of reference era geological period period amount of time date geological time geologic time period of time time period age christian era common era day eocene eocene epoch glacial epoch historic period holocene holocene epoch miocene miocene epoch oligocene oligocene epoch paleocene
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