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本文描述的标本系黑龙江省地质局第一地质队在鸡西市龙山屯(图1)麻山群地层中采得。后生动物化石在我国东北北部地槽区系首次发现。这类无骨骼的软躯体多细胞动物化石,对于研究晚前寒式纪地层的划分、对比以及生命起源、演化十分重要。迄今为止晚前寒武纪的后生动物在世界上最具有代表性的应属澳大利亚的埃迪卡拉动物群(Ediacara Fauna),因该类动物在生物演化上尚属无壳的软躯体阶段,不易保存成为化石,多数以印模出现。迄今发现
The specimens described in this article were collected from the First Geological Team of the Geological Bureau of Heilongjiang Province in the Mashan Group strata in Longshan Tun, Jixi City (Figure 1). The metazoan fossils were first found in the tectonic belts of the northeastern part of northeast China. Such skeletonless soft body multicellular animal fossils are very important for the study of the division, contrast and origin of life of the late Precambrian age strata. So far late Precambrian metazoans are the most representative of the Ediacara Fauna in Australia. Because of the evolutionary evolution of the animals, they are not shell-like soft bodies and are not easily found. Save as a fossil, the majority appear in stamping. So far found