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首页> 外文期刊>Neues Jahrbuch fur Geologie und Palaontologie. Abhandlungen >An orthonauplius of 'Orsten'-type preservation from the Upper Cambrian (Furongian) of South China
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An orthonauplius of 'Orsten'-type preservation from the Upper Cambrian (Furongian) of South China

机译：中国南方上寒武统（芙蓉人）“ Orsten”型保存的直生幼体

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摘要

A tiny larva of. 'Orsten'-type of three-dimensional preservation has been recovered from the Upper Cambrian Bitiao Formation of Wangcun section, western Hunan, South China, herein interpreted as an orthonauplius stage of a crown-group crustacean. The specimen comprises an ovoid body with a prominent labrum and three pairs of appendages. In all it exhibits comparable morphological similarities with the type-A larvae described earlier from other. 'Orsten'-type deposits. The new orthonauplius can be considered to represent a new form of type-A larvae. Such larvae represent a morpho-type and were previously reported from the Cambrian palaeo-microcontinents Laurentia, Baltica, and Australia; their find now also from South China implies a pandemic distribution. With this, type-A larvae have the widest and longest-lasting record of all Cambrian crustaceans, possibly even euarthropod fossils described so far.
机译：幼虫。从华南湘西王村段上寒武统碧跳组中发现了“ Orsten”型三维保存，这里被解释为冠状甲壳类的直生幼体阶段。标本包括一个卵形的身体，具有明显的唇唇和三对附件。总之，它表现出与其他A型幼虫相当的形态相似性。 “ Orsten”型矿床。新的正幼体可以被认为代表了一种新的A型幼虫。这种幼虫代表一种形态类型，以前曾在寒武纪古微洲劳伦提亚，波罗的海和澳大利亚报道过。他们现在在华南地区的发现也意味着大流行的分布。这样，A型幼虫在所有寒武纪甲壳类动物中拥有最广泛和最长的记录，甚至可能是迄今为止描述的真人节肢动物化石。

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