陕西南部寒武系底部棘盔状化石再研究
Acta Micropalaeontologica Sinica(2013)
Abstract
对我国陕南下寒武统底部宽川铺段含磷岩系中棘盔状化石的具刺变态骨Amoebinella echinata的属征进行了补充修改,并对其分类位置和亲缘关系做了探讨。标本分为主支和数个分支,并具棘刺、纵纹及可能的口部等特征,其中部分棘盔类标本可能代表"固着幼虫期"或"螅状幼体期"的独立生物个体而不是动物的外部硬体。
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Key words
Cambri an,XiXiang county,"Sedentary planula"or"Primary polyp",southern Shaanxi,China,Helmet-like fossils,Amoebinella
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