Long expected sponges from the Neoproterozoic Ediacara fauna of South Australia
Long expected sponges from the Neoproterozoic Ediacara fauna of South Australia
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DOI：
10.1017/s0022336000023283
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发表时间：
1996-03-01
影响因子：
1.4
通讯作者：
Rigby, JK
中科院分区：
文献类型：
--
作者：
Gehling, JG;Rigby, JK
南澳大利亚州新元古代埃迪卡拉动物群的新化石被解释为已知的最古老的六角虫海绵。它们赋存于罗恩斯利石英岩(庞亚群)的埃迪卡拉成员中，来自弗林德斯山脉的几个地点。该新属的特征是圆盘状的印记，保留了特有的刺状网络，并被重建为凸起的海绵，在顶端有外围褶边和口状圆盘。
New fossils from the Neoproterozoic Ediacara fauna of South Australia are interpreted as the oldest known hexactinellid sponges. They occur within the Ediacara Member of the Rawnsley Quartzite (Pound Subgroup) from several locations in the Flinders Ranges. The new genus, Palaeophragmodictya, is characterized by disc-shaped impressions preserving characteristic spicular networks and is reconstructed as a convex sponge with a peripheral frill and an oscular disc at the apex.