A nearly modern amphibious bird from the early Cretaceous of Northwestern China

被引：125
作者：
You, Hai-lu
Lamanna, Matthew C.
Harris, Jerald D.
Chiappe, Luis M.
O'Connor, Jingmai
Ji, Shu-an
Lu, Jun-chang
Yuan, Chong-xi
Li, Da-qing
Zhang, Xing
Lacovara, Kenneth J.
Dodson, Peter
Ji, Qiang
机构：
[1] Carnegie Museum Nat Hist, Sect Vertebrate Paleontol, Pittsburgh, PA 15213 USA
[2] Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
[3] Dixie State Coll, Dept Sci, St George, UT 84770 USA
[4] Nat Hist Museum Los Angeles Cty, Dinosaur Inst, Los Angeles, CA 90007 USA
[5] Third Geol & Mineral Resources Explorat Acad Gans, Fossil Res & Dev Ctr, Lanzhou 730050, Gansu, Peoples R China
[6] Prov Museum Gansu Prov, Nat Dept, Lanzhou 730050, Peoples R China
[7] Drexel Univ, Dept Biosci & Biotechnol, Geol & Paleontol Program, Philadelphia, PA 19104 USA
[8] Univ Penn, Sch Vet Med, Dept Anim Biol, Philadelphia, PA 19104 USA
来源：
SCIENCE | 2006年 / 312卷 / 5780期
关键词：
D O I：
10.1126/science.1126377
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Three-dimensional specimens of the volant fossil bird Gansus yumenensis from the Early Cretaceous Xiagou Formation of northwestern China demonstrate that this taxon possesses advanced anatomical features previously known only in Late Cretaceous and Cenozoic ornithuran birds. Phylogenetic analysis recovers Gansus within the Ornithurae, making it the oldest known member of the clade. The Xiagou Formation preserves the oldest known ornithuromorph-dominated avian assemblage. The anatomy of Gansus, like that of other non-neornithean (nonmodern) ornithuran birds, indicates specialization for an amphibious life-style, supporting the hypothesis that modern birds originated in aquatic or littoral niches.
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页码：1640 / 1643
页数：4
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