Research NewsPaleontology

Climate-Evolution Link Weakens

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Science  27 Jun 1997:
Vol. 276, Issue 5321, pp. 1968
DOI: 10.1126/science.276.5321.1968

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Researchers have speculated that climate's innumerable warmings and coolings have spurred evolution by pushing unfit species to extinction and opening the way to new, better adapted species. But the best compilation of fossil evidence on mammal evolution to date now shows that climate had little effect on most of the evolutionary churnings of the past 80 million years.