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The origin of birds is still an unsolved mystery. Archaeoteryx, which was discovered in marine stratum of 145Ma in German in 1861, has been considered to be the sole representative of Jurrassic and the ancestor of birds before. Since the discovery over a century ago, studies on the origin of birds have nearly not any new progress, and have also became one of the four difficulties of life development history. But from 1987, at Chaoyang, Beipiao, Lingyuan in West Liaoning of China, 16 genus and 20 species of fossil birds have been discovered, part of which are a little older than Archaeoptery. It is an important discovered and has great scientific values to the studies on the origin and evolution of birds. It produces wide repercussions in academic circles all over the world. All of Chinese people feel proud of it. The bird fossil community is co-existing with abundant other animal and plant fossils (Jehol Biota), animal fossils including Reptilia, Fish, Estheria, Ostracoda, Insecta, Bivalva, Gastropoda and so on; plant fossils including Rteridophuta, Cycadophyta, Ginkophyta, Coniferophyta, Angiospermae and other classification unclear fossils, such as silicified wood, Seed, Spore-pollen. At Beipiao, there are six bird-bearing beds with a large buried density, for example in a 16 square meters area in a tuffaceous shale bed, 11 pieces of well-preserved bird fossils have been discovered. Such a buried density is unprecedented in the researching history of paleo-birds all over the globe. We have videotaped at sampling places. It is greatly significant to the studies on the origin, evolution, and death and then buried conditions of birds, and their paleoecological and paleogeographical characteristics |
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