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nounlast 2 million years
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part of: -
adjectivecoming next after the third and just before the fifth in position or time or degree or magnitude
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adjectiveconsisting of or especially arranged in sets of four
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nounthe cardinal number that is the sum of three and one
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Parts of quaternary
- "holocene epoch"
- "holocene"
- "pleistocene"
- "pleistocene epoch"
- "recent"
- "recent epoch"
- "glacial epoch"