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Nature 447, 918-920 (21 June 2007) | doi:10.1038/447918a; Published online 20 June 2007
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Evolutionary biology: Re-crowning mammals
Richard L. Cifelli1 & Cynthia L. Gordon2
Abstract
The evolutionary history of mammals is being tackled both through molecular analyses and through morphological studies of fossils. The 'molecules versus morphology' debate remains both vexing and vibrant.
On page 1003 of this issue, Wible and co-authors1 announce the discovery of a well-preserved mammal from Mongolia dated at between 71 million and 75 million years old. The fossil, dubbed Maelestes gobiensis, is noteworthy in its own right: finds of this sort are exceptional in view of the generally poor record of early mammals.
- Richard L. Cifelli is at the Sam Noble Oklahoma Museum of Natural History, 2401 Chautauqua Avenue, Norman, Oklahoma 73072, USA.
Email: rlc@ou.edu - Cynthia L. Gordon is in the Department of Zoology, University of Oklahoma, Norman, Oklahoma 73019, USA.
Email: cindyg@ou.edu
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