Resolution is emerging from the gunsmoke surrounding the origin of mammals such as ourselves.
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References
Springer,M. S et al. Parallel adaptive radiations in two major clades of placental mammals. Nature 409,610- 614 2001.
O'Brien,S. J. et al. Molecular phylogenetics and the origins of placental mammals. Nature 409,614- 618 2001.
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Gee, H. Shaking the family tree. Nature (2001). https://doi.org/10.1038/news010201-11
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DOI: https://doi.org/10.1038/news010201-11