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| Ne·o·gene [ n ə jn ] |
noun |
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| Definition: |
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period of geologic time: a period of geologic time from 23.3 million to 1.64 million years ago that includes both the Miocene and Pliocene epochs
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| [Late 19th century. <neo- + Greek -genēs "born"] |
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 Ne·o·gene adjective |
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