鸟类起源有关问题的探讨──鸟类起源问题尚未解决

Exploration on the origin of birds─a problem remains to be solved

鸟类起源是物种起源中的重大且严肃的科学课题，本文从地层学、鸟类形态学及兽脚恐龙演化等方面分析了有关鸟类的演化特征，对中华龙鸟是鸟类的最早祖先、鸟类起源问题已经解决的观点提出了不同看法，认为鸟类的起源演化课题仍需深入探索和研究。

： The origin of birds is a major and serious scientific problem for the origin of species． On the basis of stratigraphy， morphology of birds and the evolution of Theropoda dinosaurs， the paper analyzes the evolutionary characteristics of birds concerned， and puts forward a different view on the origin of birds． The authors think that the problem on the origin and evolution of birds should be explored and studied in depth．