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从1980年Alvarez父子等发现中、新生代地层接界处的粘土层中铱异常丰富以后,天外带给生物界的灾难对地球生物的演进起着决定作用的新灾变论于是盛行起来。这一简单直截的灾变论点又特别吸引那些并不从事古生物或生物研究的局外专家。为此,现从生物界容易为人明瞭的量方面的剧变现象,再向前跨一步,审视以生物界为主体的当时地质史在基本性质方面的变化。在仔细分析了有关化石的形态、构造、功能和当时地球各圈层的演变阶段以后,可以发现随中、新生代的交替所发生的大冷血动物恐龙类和温血动物哺乳类之间的替
After Alvarez’s father and son discovered in 1980 that there was an extraordinary abundance of iridium in the clay layer of the Meso-Cenozoic strata junction, the new catastrophe theory, which brought the disaster of the biological world to the evolution of the earth’s biology, became popular. This simple, straightforward catastrophe is particularly appealing to outside experts who are not involved in paleontology or biological research. To this end, we now take a one-step step forward from the readily apparent quantity in the biological world to examine the fundamental changes in the geological history that took the biota as the main body. After careful analysis of the morphology, structure and function of the fossils and the evolution stages of the various layers of the earth at that time, it can be found that the substitutions between the dinosaurs and the mammals of the warm-blooded animals that occurred during the alternation of the Mesozoic and Cenozoic