节肢动物吐卓虫咬痕化石在云南昆明附近寒武纪早期关山生物群的发现及意义  

Occurrence of bite marks on Tuzoia(Arthropoda)from the early Cambrian Guanshan biota in Kunming,Yunnan

作　　者：董存治[1] 宋子瑜 刘旭辉 胡世学[4] DONG Cun-zhi;SONG Zi-yu;LIU Xu-hui;HU Shi-xue(Kunming University of Science and Technology,Kunming 650051,China;Montverde Academy Shanghai,Shanghai 201318,China;Yunnan Provincial Geomatics Centre,Kunming 650216,China;Chengdu Center,China Geological Survey,Chengdu 610081,China)

机构地区：[1]昆明理工大学,昆明650051 [2]上海梦沃未来学院,上海201318 [3]云南省基础地理信息中心,昆明650216 [4]中国地质调查局成都地质调查中心,成都610081

出　　处：《古生物学报》2024年第1期16-23,共8页Acta Palaeontologica Sinica

基　　金：国家自然科学基金(42072006)资助。

摘　　要：本文报道了一块来自云南省昆明市附近寒武纪第二世第四期关山生物群具咬痕的双瓣壳节肢动物吐卓虫(Tuzoia)化石,系吐卓虫咬痕化石在全球范围的首次发现。该发现证实作为主动捕食者的吐卓虫很可能被大型捕食者(如奇虾类或莱德利基虫类三叶虫等)捕食,说明寒武纪早期的海洋生物群落已经具有高度复杂化的食物链,为进一步了解吐卓虫的生态位及深入探讨寒武纪大爆发时期海洋生态系统食物网结构提供了新的信息。First fossil record of bite marks on the bivalved arthropod Tuzoia is reported from the Guanshan biota(Stage 4,Series 2,Cambrian)in Yunnan Province,South China.These bite marks,probably produced by predators such as radiodonts or redlichid trilobites,are interpreted as recovery of unsuccessful predatory attacks.The new discovery shows that Tuzoia were preyed upon by larger predators,indicating the existence of a complex food chain in the early Cambrian.This report provides new information in understanding the ecological niche of Tuzoid arthropods and the food web structure of the early Cambrian marine ecosystems.

关 键 词：吐卓虫 咬痕 关山生物群 寒武纪早期 食物网 

分 类 号：O17[理学—数学]