生物群研讨会将在京召开 鸟类起源和进化一直是生物学界的重要课题之一。自从 １８６１年发现第一块始祖鸟标本以来，产生了各种有关鸟类起源及进化的学说、假设，同时也留下了许多疑问，其主要原因是化石太少、各种学说都是建立在个别标本之上。 近些年来，在我国北方，特别是 Biome Workshop To hold the birth and evolution of birds in Beijing has been one of the major topics in biology. Since the first specimen of Archeopteryx was discovered in 1861, various theories and assumptions about the origin and evolution of birds have arisen, and many questions have also been left. The main reason is that there are too few fossils and various theories are based on individual Above the specimen. In recent years, especially in our country’s north