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Showing 1 - 20 results of 375 for search '"Million years ago"', query time: 0.48s Refine Results
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    ... Hemisphere glaciation 2.7 million years ago is consistent with Milankovitch's orbital theory, which posited...
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    ..., plant-insect interactions date back to the Devonian period, about 420 million years ago, when plants...
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  12. 12
    by Repenning, Charles A.
    Published in ARCTIC (1990)
    ...Between 2.5 to 1.8 million years ago changes in arctic climate and in meadow mouse dispersal routes...
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  13. 13
    by Keisling, Benjamin Andrew
    Published 2015
    ... million years ago) represents an analog for future climate conditions, with p CO 2 and continental...
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  14. 14
    ... circulation throughout the Cenozoic era3 (from about 65 million years ago to the present). In the early...
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    ...–2.58 million years ago), an analogue of a future warmer Earth. Here we show that, in the Eurasian...
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    by Herman, Yvonne
    Published in Science (1970)
    ... glaciation commenced prior to 6 million years ago, the Arctic Ocean remained free of permanent pack ice up...
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    ... of the climate of the Pliocene epoch (5.33–2.58 million years ago), an analogue of a future warmer Earth. Here we...
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    ... circulation throughout the Cenozoic era3 (from about 65 million years ago to the present). In the early...
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    .... The history of the bog lemmings begins 4 million years ago in southeastern Europe with Plioctomys mimomiformis...
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    .... The history of the bog lemmings begins 4 million years ago in southeastern Europe with Plioctomys mimomiformis...
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