Octoradiate Spiral Organisms in the Ediacaran of South China  

作　　者：TANG Feng YIN Chongyu Stefan BENGTSON LIU Pengju WANG Ziqiang GAO Linzhi 

机构地区：[1]Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China [2]Key Laboratory of Stratigraphy and Paleontology, Chinese Academy of Geological Sciences, Beijing 100037, China [3]Department of Palaeozoology, Swedish Museum of Natural History, Box 50007, SE-10405, Stockholm, Sweden [4]School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China

出　　处：《Acta Geologica Sinica(English Edition)》2008年第1期27-34,共8页地质学报（英文版）

基　　金：Fieldwork and research were funded by the National Natural Science Foundation of China （Grant Nos. 40272015 and 40672022）; the China Geology Survey （Grant No. 200213000042 and 1212010511607）.

摘　　要：Shales of the Ediacaran Doushantuo Formation of South China contain a new disc-shaped macrofossil, Eoandromeda octobrachiata, characterized by eight spiral arms that were probably housed within an outer membrane. Although the presence of eight radiating structures entails a resemblance to cnidarian octocorals as well as to ctenophores, direct homologies with these extant groups are unlikely. Instead we bring attention to the helicospiral morphology of newly reported embryos from the Doushantuo Formation, suggesting that the long-sought adults of the Ediacaran embryonic metazoans have finally been found.Shales of the Ediacaran Doushantuo Formation of South China contain a new disc-shaped macrofossil, Eoandromeda octobrachiata, characterized by eight spiral arms that were probably housed within an outer membrane. Although the presence of eight radiating structures entails a resemblance to cnidarian octocorals as well as to ctenophores, direct homologies with these extant groups are unlikely. Instead we bring attention to the helicospiral morphology of newly reported embryos from the Doushantuo Formation, suggesting that the long-sought adults of the Ediacaran embryonic metazoans have finally been found.

关 键 词：Octoradiate spiral organism Eoandromeda octobrachiata EDIACARAN South China 

分 类 号：Q91[天文地球—古生物学与地层学]