华南伊迪卡拉纪类水母化石新发现（英文）  

Hydrozoan-like Ediacaran fossils from South China

作　　者：唐烽[1,2] 钟玲[3] 金幸生 郭东辉[5] 尹崇玉[1,2] 

机构地区：[1]国土资源部地层与古生物重点实验室,北京100037 [2]中国地质科学院地质研究所,北京100037 [3]四川省博物院,四川成都610071 [4]浙江省自然历史博物馆,浙江杭州310014 [5]厦门大学海洋环境科学学院,福建厦门361005

出　　处：《地质通报》2016年第1期1-9,共9页Geological Bulletin of China

基　　金：supported by the National Natural Science Foundations of China(No.41172002,41162003,41572024);the China Geology Survey(No.1212011120140-1)

摘　　要：华南黔东北地区伊迪卡拉系陡山沱组黑色页岩中产出丰富多样的海相底栖宏体化石组合,其中包含2个新属种Kullingia rotadiscopsis sp.nov.和Eoaequorea xingi gen.&sp.nov.。新类别具有保存清晰的碳质同心环纹和辐射状纹饰,形态上相似于国外广泛分布在碎屑岩和碳酸盐岩中的伊迪卡拉纪典型的圆盘状化石,例如Aspidella,Ediacaria,Cyclomedusa,Eoporpita,Ovatoscutum,Spriggia,Kullingia等。上述化石在国外几乎都保存为印痕,近年来多被解释为不明亲缘底栖生物的圆形固着痕迹或抓痕、圆环状扫痕等,华南陡山沱组碳质压膜保存的圆盘状宏体化石显然不支持该解释。目前,还没有充分的证据表明华南新发现的碳膜化石与国外形态类似的印痕化石如Kullingia和Aspidella具有相同的亲缘关系,但支持将华南化石归属为可能最早的浮游型水螅水母。An abundant and diversified assemblage of benthic fossils from the Ediacaran Doushantuo black shales in the Wenghui sec- tion of Guizhou Province contains two discoidal carbonaceous forms, Kullingia rotadiscopsis sp. nov. and Eoaequorea xingi gen. ＆ sp. nov. The fossils have well-preserved concentric rings and radiating lines, and resemble many circular casts and moulds in Edia- caran clastic and carbonate rocks in the world, such as Aspidella, Ediacaria, Cyclomedusa, Eoporpita, Ovatoscutum, Spriggia and KuU- ingia. The Doushantuo carbonaceous macrofossils help us to inquire into the current functional identifications of circular disks as the holdfasts of unknown organism or scratch circles. Although there is not sufficient correspondence in morphology to warrant reinter- preting all previously described Kullingia and Aspidella form-genus-type structures, these carbonaceous compressions are prone to be the ancestor of pelagic jellyfish-like organisms with medusoid hydrozoan affinity.

关 键 词：伊迪卡拉纪 圆盘状宏体化石 华南 似水母生物 

分 类 号：P534.41[天文地球—古生物学与地层学] Q915.2[天文地球—地质学]