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  • Current diversity pattern of North American mammals a ‘recent’ trend, study finds

    In a study of fossils spanning 63 million years, University of Illinois animal biology professor Jonathan Marcot and his colleagues found that current patterns of mammal biodiversity in North America are a relatively recent phenomenon.

    Photo by L. Brian Stauffer


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  • Editor’s notes:

    To reach Jonathan Marcot, call 217-244-6826; email

    The paper “Late Cenozoic Onset of the Latitudinal Diversity Gradient in North American Mammals” is available from the U. of I. News Bureau.