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据澳大利亚弗林德斯大学I.A.Dyson报导(“Nature”1985,Vol.318,No.6043,P.283—285),近期在南澳大利亚州晚前寒武系威尔彭纳群底部发现了叶状化石(Frond——Like fossils),经鉴定为后生动物,作者暂将其归为Pteridinium属。 在南澳弗林德斯山脉晚前寒武系庞德亚群朗斯利石英岩下部,产有典型的埃迪卡拉化石组合。此次在埃迪卡拉段(Ediacara Member)以下3000余米处发现了叶状化石,从而将原埃迪卡拉化石组合之下界,由沃诺卡组的底界推至威尔彭纳群与翁贝拉塔拉群的分界面,即晚元古代冰碛岩的顶界(见图1)。
According to the report of IADyson, University of Flinders, Australia (“Nature” 1985, Vol.318, No.6043, P.283-285), leafy fossils have recently been found at the bottom of the Precambrian Wilpena Group in South Australia (Frond - Like fossils), identified as metazoan, the author temporarily classified as Pteridinium. A typical Eddie Kala fossil assemblage is found in the Lower Precambrian Ronsley quartzite in the Precambrian Founders in South Australia. This leaf-shaped fossil was discovered more than 3,000 meters below the Ediacara Member, pushing the lower boundary of the original Ediacaran fossil assemblage from the bottom of the Wognoka Formation to the Wilpena Group and Umberto Tara group of the interface, that is, the top of the late Proterozoic moraine rocks (see Figure 1).