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Tiny Jurassic mammal



New Scientist has a story on its web site (www.newscientist.com) on a tiny fossil from 195 million years ago, desribed in tomorrow's Science, which may be an ancestral mammal, and was certainly close to the main line of mammalian evolution. Its skull measured just 13 centimeters, and its weight was estimated at 2 grams -- smaller than the modern 2.5 gram least shrew.
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Jeff Hecht Boston Correspondent New Scientist magazine
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