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Nature 433, 116-117 (13 January 2005) | doi:10.1038/433116b; Published online 12 January 2005

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Mammalian palaeobiology:  Living large in the Cretaceous

Anne Weil1

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Discoveries of large, carnivorous mammals from the Cretaceous challenge the long-held view that primitive mammals were small and uninteresting. Have palaeontologists been asking the wrong questions?

Although more than two-thirds of mammalian evolution occurred between about 180 million and 65.5 million years ago, many people think that these early mammals were not very exciting.

  1. Anne Weil is in the Department of Biological Anthropology and Anatomy, Duke University, 08 Biological Sciences Building, Box 90383, Durham, North Carolina 27708-0383, USA.
    e-mail: Email: annew@duke.edu

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