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Nature 416, 798-799 (25 April 2002) | doi:10.1038/416798a
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Mammalian evolution: Upwards and onwards
Anne Weil
Abstract
A newly described fossil sits on one of the lowest branches of the placental-mammal family tree. But its paws and claws suggest that, where actual vegetation was concerned, it could climb further than its contemporaries.
The fossil Eomaia scansoria, discovered in the Yixian Formation of Liaoning Province, China, and described by Ji et al. on page 816 of this issue1, is the earliest known member of the lineage leading to placental mammals. Eomaia — 'Dawn Mother' — is exceptionally well-preserved for a 125-million-year-old.
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