【摘要】 小盗龙亚科兽脚类恐龙是我国辽宁西部早白垩世"热河生物群"带羽毛恐龙的代表,在恐龙系统演化中位于兽脚亚目驰龙科的基干位置。小盗龙亚科恐龙所表现出的一些骨骼和软组织特征,如肩臼窝开口于体侧、较长的前肢、具不对称正羽等,为鸟类起源、鸟类飞行起源以及近鸟类恐龙的演化研究提供了重要信息。回顾了近年来有关小盗龙亚科的一系列重要发现,总结了已发表属种的特征,归纳了该类群对鸟类起源以及鸟类飞行起源研究具有重要意义的骨骼和羽毛特征。也对小盗龙亚科与飞行有关的特征进行功能分析,分析结果进一步支持鸟类飞行的"树栖起源假说"。更多还原

【Abstract】 The subfamily Microraptorinae is a representative group of the feathered dinosaurs from the Early Cretceous"Jehol Biota"of western Liaoning,China.As a basal dromaeosaurid,the osteologic and soft tissue characters of this group,such as laterally faced glenoid fossa,elongated forelimb and asymmetrical pennaceous feathers provide important evidence for the research of the origins of birds and bird flight,and the research of the evolution of deinonychusauria.This article reviews the recent discoveries of Microraptoria,concludes the diagnosis of the reported groups,and summarizes their important osteologic and feather structures similar to birds.An analysis of flightrelated functional morphology supports"arboreal hypothesis"of the origin of bird flight.更多还原