Soft-bodied fossils from the Shipai Formation, Lower Cambrian of the Three Gorge area, South China

Soft-bodied fossils from the Shipai Formation, Lower Cambrian of the Three Gorge area, South China
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华南三峡地区下寒武统石牌组软体化石

DOI:
10.1017/s0016756805000518
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发表时间:
2005-10
影响因子:
2.3
通讯作者:
Hua Hong
Hua Hong
中科院分区:
地球科学3区
文献类型:
--
作者:
Zhang Xingliang;Hua Hong

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湖北三峡地区下寒武统石牌组泥岩、页岩含化石丰富,含有常见的贝类化石和一些软体化石。后者提供了有关寒武纪软体生物的性质和种类的重要新信息。可识别的非矿化类群包括澄江动物群的组成部分,例如 Vetulicola Hou, 1987、一种古头目动物(Maotianshania Sun & Hou, 1987)以及保留蒂的腕足动物 Diandongia pista(未显示)。 Cambrorhytium Conway Morris & Robison, 1988,同时出现在 Burgess 页岩和澄江 Lagerstätte 中,也被发现。此外,还根据两个样本描述了一种新蠕虫。该分类单元与许多其他化石蠕虫一样,具有细长的圆柱形身体,带有环,但其特征是每个环都有一个升高的脊,并且缺乏表面装饰。由于软体化石的分辨率相对较差,石牌组的特殊保存很可能被忽视;然而,该矿点是中国伯吉斯页岩型生物群的重要延伸,位于澄江 Lagerstätte 产地东北 1500 多公里处。
Mudstones and shales in the Lower Cambrian Shipai Formation in the Three Gorge area, Hubei, China, are richly fossiliferous, containing common shelly fossils and some soft-bodied fossils. The latter provide important new information about the nature and variety of Cambrian soft-bodied organisms. Identifiable, non-mineralized taxa include components of the Chengjiang fauna, such as Vetulicola Hou, 1987, a palaeoscolecidan referable to Maotianshania Sun & Hou, 1987, and a brachiopod Diandongia pista with pedicle preserved (not illustrated). Cambrorhytium Conway Morris & Robison, 1988, co-occurring both in the Burgess Shale and the Chengjiang Lagerstätte, was also recovered. Additionally, a new worm is described based on two specimens. This taxon, in common with many other fossil worms, has a slender, cylindrical body with annulations, but it is characterized by each annulus bearing an elevated ridge and lacking surface ornamentation. The occurrence of exceptional preservation in the Shipai Formation has likely been overlooked due to the relatively poor resolution of soft-bodied fossils; nevertheless, this occurrence is an important extension of the Burgess Shale-type biotas in China, over 1500 km northeast of the provenance of the Chengjiang Lagerstätte.
DOI: --
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期刊: --
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影响因子: 64.8
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通讯作者: Liu, JN
DOI: --
发表时间: 1991
期刊: --
影响因子: --
作者:
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通讯作者: Jy Chen;J. Bergström;M. Lindstrom;X. Hou