doi: 10.1126/science.1229237.
The placental mammal ancestor and the post-K-Pg radiation of placentals
Maureen A O'Leary 1, Jonathan I Bloch, John J Flynn, Timothy J Gaudin, Andres Giallombardo, Norberto P Giannini, Suzann L Goldberg, Brian P Kraatz, Zhe-Xi Luo, Jin Meng, Xijun Ni, Michael J Novacek, Fernando A Perini, Zachary S Randall, Guillermo W Rougier, Eric J Sargis, Mary T Silcox, Nancy B Simmons, Michelle Spaulding, Paúl M Velazco, Marcelo Weksler, John R Wible, Andrea L Cirranello
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- PMID:23393258
- DOI: 10.1126/science.1229237
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The placental mammal ancestor and the post-K-Pg radiation of placentals
Maureen A O'Leary et al. Science..
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Abstract
To discover interordinal relationships of living and fossil placental mammals and the time of origin of placentals relative to the Cretaceous-Paleogene (K-Pg) boundary, we scored 4541 phenomic characters de novo for 86 fossil and living species. Combining these data with molecular sequences, we obtained a phylogenetic tree that, when calibrated with fossils, shows that crown clade Placentalia and placental orders originated after the K-Pg boundary. Many nodes discovered using molecular data are upheld, but phenomic signals overturn molecular signals to show Sundatheria (Dermoptera + Scandentia) as the sister taxon of Primates, a close link between Proboscidea (elephants) and Sirenia (sea cows), and the monophyly of echolocating Chiroptera (bats). Our tree suggests that Placentalia first split into Xenarthra and Epitheria; extinct New World species are the oldest members of Afrotheria.
Comment in
- Evolution. Fossils versus clocks.Yoder AD.Yoder AD.Science. 2013 Feb 8;339(6120):656-8. doi: 10.1126/science.1233999.Science. 2013.PMID:23393254No abstract available.
- Technical comment on "The placental mammal ancestor and the post-K-Pg radiation of placentals".Springer MS, Meredith RW, Teeling EC, Murphy WJ.Springer MS, et al.Science. 2013 Aug 9;341(6146):613. doi: 10.1126/science.1238025.Science. 2013.PMID:23929967
- Response to comment on "The placental mammal ancestor and the post-K-Pg radiation of placentals".O'Leary MA, Bloch JI, Flynn JJ, Gaudin TJ, Giallombardo A, Giannini NP, Goldberg SL, Kraatz BP, Luo ZX, Meng J, Ni X, Novacek MJ, Perini FA, Randall Z, Rougier GW, Sargis EJ, Silcox MT, Simmons NB, Spaulding M, Velazco PM, Weksler M, Wible JR, Cirranello AL.O'Leary MA, et al.Science. 2013 Aug 9;341(6146):613. doi: 10.1126/science.1238162.Science. 2013.PMID:23929968
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