title: Dinosaur evolution: feathers up for selection.
abstract: A new specimen of the early bird Archaeopteryx shows remarkable plumage preservation, including pennaceous leg feathers. But whether birds went through a four-winged stage, and in what exact functional context feathers evolved remains a matter of debate.
authors.affiliation: Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, 142 Xiwai Street, Beijing, 100044, China. Electronic address: zhouzhonghe@ivpp.ac.cn.
authors.forename: Zhonghe
authors.initials: Z
authors.lastname: Zhou
mesh_terms: D000818:Animals; D005075:Biological Evolution; D025061:Dinosaurs / Q000033:anatomy & histology*; D005241:Feathers / Q000033:anatomy & histology*; D005580:Fossils