The new framework for understanding placental mammal evolution

@article{Asher2009TheNF,
  title={The new framework for understanding placental mammal evolution},
  author={Robert J. Asher and Nigel Charles Bennett and Thomas Lehmann},
  journal={BioEssays},
  year={2009},
  volume={31}
}
An unprecedented level of confidence has recently crystallized around a new hypothesis of how living placental mammals share a pattern of common descent. The major groups are afrotheres (e.g., aardvarks, elephants), xenarthrans (e.g., anteaters, sloths), laurasiatheres (e.g., horses, shrews), and euarchontoglires (e.g., humans, rodents). Compared with previous hypotheses this tree is remarkably stable; however, some uncertainty persists about the location of the placental root, and (for example… Expand
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