贵州剑河辣子寨村辣子寨剖面杷榔组的杷榔动物群是近期发现的一个化石丰度较高且较复杂多样的动物群。该产地的化石库含有两个化石富集的层位,即下化石层和上化石层。通过对两个化石富集层的岩石结构、构造、沉积特征、生物类群组成及化石丰度和保存特征等方面的分析研究表明,下化石层与上化石层内化石组合和埋藏特征存在较大差异。下化石层类群组成多样、化石丰度较高,以掘头虫类三叶虫、三叶形虫Naraoia、大型双瓣壳节肢动物Isoxys、Tuzoia及古蠕虫、海绵等为主,且化石主要保存在事件沉积层内,保存质量较好,为外陆棚沉积环境下大量生物个体发生原位快速沉积埋藏作用形成。而上化石层内化石以具硬壳的三叶虫为主,有较大的埋藏量,少量或碎片状的Naraoia,Isoxys,且这类化石数量少,主要在背景层中保存,可能为静水沉积时,沉积界面积累了大量生物遗体并暴露于基底表面一定时间后,再被沉积物逐渐堆积掩埋而形成,为生物遗壳的原位或近原位埋藏。 Guizhou Kaozhai spicy Zi Zhaizun spicy Zhaizi section of the betel nut group of betel nut group is a recently discovered fossil abundance and more complex and diverse animal groups. The fossil reservoir in this area contains two fossil-rich strata, the lower fossil and the upper fossil. Based on the analysis of the rock structure, structure, sedimentary characteristics, biota composition, fossil abundance and preservation characteristics of two fossil-rich reservoirs, it is found that the fossil assemblage and burial characteristics of the lower fossil layer and the upper fossil layer are large difference. The lower fossil layers are diverse in composition and have a high abundance of fossils. The dominant fossils are Trilobite trilobitum, Naraoia, Isoxys, Tuzoia and ancient worms and sponges, and the fossils are mainly preserved In the sedimentary layer of the event, the preservation quality is better, and a large number of organisms in the sedimentary environment of the outer continental shelf are rapidly deposited and burial in situ. The fossils in the upper fossil layer are mainly trilobite with crustaceans, with large amount of burial, small or fragmented Naraoia, Isoxys, and few such fossils, mainly preserved in the background layer, which may be still water During deposition, a large amount of biological remains accumulate on the depositional interface and are exposed to the surface of the substrate for a certain period of time, and then the sediments are gradually accumulated and buried to form buried biological sites in situ or nearly in situ.