Synchronous aggregate growth in an abundant new Ediacaran tubular organism
Synchronous aggregate growth in an abundant new Ediacaran tubular organism
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DOI：
10.1126/science.1152595
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发表时间：
2008-03-21
期刊：
影响因子：
56.9
通讯作者：
Gehling, James G.
中科院分区：
文献类型：
--
作者：
Droser, Mary L.;Gehling, James G.
在南澳埃迪卡拉附近的新元古代软体生物群中，最丰富的分类单元是由相似大小的个体组成的集群，这表明它们是由飞溅物引起的同步聚集生长。管的Funisia dorothea gen. et sp. nov.锚定在浅，桑迪海床和生活在密集，典型的单种浓度。管由模块化的连续重复元件组成。个体通过向管状体添加系列元素和通过管的分支而生长。它们的结构和紧密的组合暗示它们可能与孔动物门或刺胞动物门有亲缘关系.这些数据表明，一些最成功的海洋无脊椎动物的生态策略，今天已知的地方，在地球上最古老的已知后生动物生态系统的出现之前，浮游生物化和广泛的捕食。
The most abundant taxon of the Neoproterozoic soft- bodied biota near Ediacara, South Australia, occurs as clusters of similarly sized individuals, which suggests synchronous aggregate growth by spatfall. Tubes of Funisia dorothea gen. et sp. nov. were anchored within the shallow, sandy sea bed and lived in dense, typically monospecific concentrations. Tubes were composed of modular, serially repeating elements. Individuals grew by adding serial elements to the tubular body and by branching of tubes. Their construction and close- packed association imply likely affinity within the Porifera or Cnidaria. These data suggest that several of the most successful marine invertebrate ecological strategies known today were in place in Earth's oldest known metazoan ecosystems before the advent of skeletonization and widespread predation.