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

Mark S. Springer, Robert W. Meredith, Emma C. Teeling, William J. Murphy

Research output: Contribution to journalComment/debate

24 Scopus citations


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.

Original languageEnglish
Pages (from-to)613b
Issue number6146
Publication statusPublished - 1 Jan 2013


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