Eight-armed Ediacara fossil preserved in contrasting taphonomic windows from China and Australia
Eight-armed Ediacara fossil preserved in contrasting taphonomic windows from China and Australia
复制标题
来自中国和澳大利亚的八臂埃迪卡拉化石保存在对比鲜明的埋藏窗口中
DOI：
10.1130/g25203a.1
复制
发表时间：
2008-11
期刊：
影响因子：
5.8
通讯作者：
Zhao, Yuanlong
中科院分区：
文献类型：
--
作者：
Gehling, James G.;Xia, Shuhai;Droser, Mary L.;Zhu, Maoyan;Zhao, Yuanlong
我们报告了八臂Ediacara化石Eoandromeda brachiata在中国南方陡山沱黑色页岩中作为碳质压缩物和在南澳Rawnsley石英岩中作为铸模和铸模保存的情况。两个埋藏窗中对比鲜明的保存风格表明E.腕足类可能有一个相对较硬的有机珠被，这就排除了它与巨大的凝集有孔虫如异植体的密切比较。它的八面对称性和右旋螺旋臂表明它可能是一种双胚层动物，与刺胞动物和栉水母共享一些特征，尽管它的系统发育亲和力仍然开放。这是第一个也是唯一一个明确确定的埃迪卡拉纪大型化石，出现在两个截然不同的埋藏窗口中，从而弥合了埃迪卡拉和庙河生物群之间传统的生物学和分类学差距，这两个生物群共同记录了已知最早的宏观和复杂的生命。
We report the preservation of the eight-armed Ediacara fossil Eoandromeda octobrachiata as carbonaceous compressions in the Doushantuo black shale of south China and as casts and molds in the Rawnsley Quartzite in South Australia. The contrasting preservational styles in two taphonomic windows indicate that E. octobrachiata may have had a relatively recalcitrant organic integument, which rules out its close comparison with giant agglutinated foraminifers such as xenophyophores. Its octaradial symmetry and dextrally spiraling arms suggest that it may be a diploblastic-grade animal sharing some features with cnidarians and ctenophores, although its phylogenetic affinity remains open. It is the first and only unambiguously identified Ediacaran macrofossil that occurs in two drastically different taphonomic windows, thus bridging the conventional biological and taxonomic gaps between the Ediacara and Miaohe biotas, which collectively record the earliest known macroscopic and complex life.
登录
查看更多内容
影响因子：
5.8
作者：
A. Draut;P. Clift
通讯作者：
A. Draut;P. Clift
影响因子：
2.6
作者：
Butterfield, Nicholas J.;Balthasar, Uwe;Wilson, Lucy A.
通讯作者：
Wilson, Lucy A.
DOI：
10.1666/0022-3360(2000)074
发表时间：
2000-09
期刊：
--
影响因子：
--
作者：
S. Xiao;A. Knoll
通讯作者：
S. Xiao;A. Knoll
DOI：
10.1093/icb/43.1.104
发表时间：
2003-02
期刊：
--
影响因子：
--
作者：
B. Waggoner
通讯作者：
B. Waggoner
影响因子：
2.7
作者：
R. Jenkins
通讯作者：
R. Jenkins