澄江动物群中翻吻动物的埋葬学与生态学研究  

Taphonomy and ecology of the introverts from the Chengjiang fauna

作　　者：韩健[1] 张志飞[1] 刘建妮[1] 

机构地区：[1]西北大学地质学系,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2004年第2期207-211,U002,共6页Journal of Northwest University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(49972003;40332016);国家"973"资助项目(G2000077700)

摘　　要：目的　探讨云南早寒武世澄江化石库中翻吻动物的运动和生态习性。方法　依据大量蠕虫标本的观察,认为的确有一部分翻吻动物化石为异地埋葬,并列举了一些原地埋葬的证据。结果　部分翻吻动物如Tylotitespetiolaris,Paraselkirkia可能为营底上生活而并非全部为底内钻孔生活;报道了部分翻吻动物的密集埋葬现象;发现一些Cricocosmia虫体表面具有一种未知生物属性的附生物,可能代表了一种外寄生关系;翻吻动物在滇东地区的分布可能受水深控制。结论　早寒武世翻吻动物的运动,以及生态习性发生了一定程度的分异。Aim The introverts from the Lower Cambrian Chengjiang Lagersttte in Yunnan province have not been studied thoroughly,so further exploration is made herein.Methods Basing on observation of large mount of specimens, several collusions are reached herein. Results Some of introverts fossils,but not all,are evidenced burying in situ.Bedding planes or layers with dense population of introverts are reported.The introverts such as Tylotites petiolaris,Paraselkirkia may dwell on the surface of sediment,and they are epifauna rather than burrowers.A kind of problematic animal is found usually attaching on the surface of Cricocosmia,indicating a relationship of epiparasition.The distribution of the introverts in the eastern Yunnan probably is controlled by the deepness of the sea.Conclusion The life habits of introverts have been divergent corresponding with their morphological disparity in the Early Cambrian.

关 键 词：澄江动物群 翻吻动物 早寒武世 埋葬 古生态学 生态环境 组合面貌差异 

分 类 号：Q915.5[天文地球—古生物学与地层学]