Technical comment on "The placental mammal ancestor and the post-K-Pg radiation of placentals".

@article{Springer2013TechnicalCO,
  title={Technical comment on "The placental mammal ancestor and the post-K-Pg radiation of placentals".},
  author={Mark S. Springer and Robert W. Meredith and Emma C. Teeling and William Joseph Murphy},
  journal={Science},
  year={2013},
  volume={341 6146},
  pages={613}
}
O'Leary et al. (Research Article, 8 February 2013, p. 662) examined mammalian relationships and divergence times and concluded that a single placental ancestor crossed the Cretaceous-Paleogene (K-Pg) boundary. This conclusion relies on phylogenetic analyses that fail to discriminate between homology and homoplasy and further implies virus-like rates of nucleotide substitution in early Paleocene placentals. 
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Phylogenetic Analysis Using Parsimony (* and Other Methods) Version 4 (Sinauer

  • D. L. Swofford, PAUP
  • 2002
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