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.
CITATION STYLE
Cifelli, R. L., & Gordon, C. L. (2007). Re-crowning mammals. Nature, 447(7147), 918–920. https://doi.org/10.1038/447918a
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