Details

Autor(en) / Beteiligte

• O'Leary, Maureen A.
• Bloch, Jonathan I.
• Flynn, John J.
• Gaudin, Timothy J.
• Giallombardo, Andres
• Giannini, Norberto P.
• Goldberg, Suzann L.
• Kraatz, Brian P.
• Luo, Zhe-Xi
• Meng, Jin
• Ni, Xijun
• Novacek, Michael J.
• Perini, Fernando A.
• Randall, Zachary S.
• Rougier, Guillermo W.
• Sargis, Eric J.
• Silcox, Mary T.
• Simmons, Nancy B.
• Spaulding, Michelle
• Velazco, Paúl M.
• Weksler, Marcelo
• Wible, John R.
• Cirranello, Andrea L.

Titel

The Placental Mammal Ancestor and the Post—K-Pg Radiation of Placentals

Ist Teil von

• Science (American Association for the Advancement of Science), 2013-02, Vol.339 (6120), p.662-667

Ort / Verlag

United States: American Association for the Advancement of Science

Erscheinungsjahr

2013

Link zum Volltext

Quelle

American Association for the Advancement of Science

Beschreibungen/Notizen

• 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.