Of Whale Knuckles and Placental Trees

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Science  22 Jul 2005:
Vol. 309, Issue 5734, pp. 559-560
DOI: 10.1126/science.1112246

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The Rise of Placental Mammals. Origins and Relationships of the Major Extant Clades. Kenneth D. Rose and J. David Archibald, Eds.. Johns Hopkins University Press, Baltimore, MD, 2005. 271 pp. $95, £63.50. ISBN 0-8018-8022-X.

Focusing on anatomical evidence but not ignoring findings from molecular studies, the contributors discuss our current understanding of the initial radiation and ordinal relationships of placental mammals.