古脊椎动物学报2003，Vol.41Issue(3)：195-202,8.
辽宁西部早白垩世义县组一新的手盗龙类
A NEW MANIRAPTORAN DINOSAUR FROM THE EARLY CRETACEOUS YIXIAN FORMATION OF WESTERN LIAONING
摘要
Abstract
A specimen collected from the Early Cretaceous Yixian Formation, Jehol Group of Liaoning,China, represents a new genus and species of maniraptoran theropod. It comprises almost complete articulated pectoral girdles, forelimbs and some ribs and is here named Yixianosaurus longimanus gen. et sp. nov. Diagnostic features of the new species include manus 140% as long as humerus, manual phalanx Ⅱ-2 longer than metacarpal Ⅱ, manual phalanx Ⅲ-3 244% as long as phalanx Ⅲ-1, and manual phalanx Ⅲ-2 bearing a proximoventral heel. With the integuments preserved on the holotype specimen, Y. longimanus represents the ninth feathered dinosaur species reported from western Liaoning. The elongated penultimate phalanges of Y. longimanus indicate an improved grasping capability and might represent an adaptation to the arboreal habit. The discovery of Y. longimanus increases the diversity of theropod dinosaurs in the Jehol Fauna.关键词
辽宁义县/早白垩世/义县组/手盗龙类Key words
Yixian/Liaoning/Early Cretaceous/Yixian Formation/Maniraptora分类
生物科学引用本文复制引用
徐星,汪筱林..辽宁西部早白垩世义县组一新的手盗龙类[J].古脊椎动物学报,2003,41(3):195-202,8.基金项目
国家自然科学基金委员会创新群体基金、国家重点基础研究发展规划项目(编号:G2000077700)和国家自然科学基金委员会杰出青年基金(编号:40125006)资助. （编号:G2000077700）
