The placental mammal ancestor and the post-KPg radiation of placentals (original) (raw)

Artículo

[O'Leary, Maureen A.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=O'Leary, Maureen A.); [Bloch, Jonathan I.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Bloch, Jonathan I.); [Flynn, John J.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Flynn, John J.); [Gaudin, Timothy J.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Gaudin, Timothy J.); [Giallombardo, Andres](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Giallombardo, Andres); Giannini, Norberto Pedro ; [Goldberg, Suzann L.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Goldberg, Suzann L.); [Kraatz, Brian P.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Kraatz, Brian P.); [Luo, Zhe Xi](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Luo, Zhe Xi); [Meng, Jin](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Meng, Jin); [Ni, Xijun](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Ni, Xijun); [Novacek, Michael J.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Novacek, Michael J.); [Perini, Fernando A.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Perini, Fernando A.); [Randall, Zachary S.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Randall, Zachary S.); [Rougier, Guillermo W.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Rougier, Guillermo W.); [Sargis, Eric J.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Sargis, Eric J.); [Silcox, Mary T.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Silcox, Mary T.); [Simmons, Nancy B.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Simmons, Nancy B.); [Spaulding, Michelle](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Spaulding, Michelle); [Velazco, Paúl M.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Velazco, Paúl M.); [Weksler, Marcelo](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Weksler, Marcelo); [Wible, John R.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Wible, John R.); [Cirranello, Andrea L.](/discover?field=author&filtertype=author&filter%5Frelational%5Foperator=equals&filter=Cirranello, Andrea L.)

Fecha de publicación: 02/2013

Editorial: American Association For The Advancement Of Science

Revista: Science

ISSN: 0036-8075

Idioma: Inglés

Tipo de recurso: Artículo publicado

Resumen

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.