A problematic cnidarian (Cambroctoconus; Octocorallia?) from the Cambrian (Series 2-3) of Laurentia

Peel John S.

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A problematic cnidarian (Cambroctoconus; Octocorallia?) from the Cambrian (Series 2-3) of Laurentia

机译：一个有问题的Cnidarian（Cambrococonus; Octocorallia？）来自Laurentia的寒武纪（第2-3系列）

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The problematic calcified cnidarian Cambroctoconus is described from the Henson Gletscher Formation (Cambrian Series 2, Stage 4-Series 3, Stage 5) of North Greenland, representing the first record from Laurentia of a genus otherwise recently described from China, Kyrgyzstan, and Korea. Internal molds produced by penetrative phosphatization mirror the pervasive pore system of the calice walls and septa. The pore system is compared to the network of gastrodermal solenia that distributes nutrients between polyps and surrounding stolon tissues in present day octocorals. In conjunction with the octagonal form of the individual coralla and eight-fold symmetry of septa, the pore system promotes assignment of Cambroctoconus to the Octocorallia, a basal clade in cnidarian phylogeny. Octocorals ('soft corals') are diverse in present day seas, but have a poor fossil record despite the general development of distinctive calcareous spicules. New taxa: Order Cambroctoconida new; Cambroctoconus koori new species.

机译：从北格陵兰州的Henson Gletscher地层（Cambrian系列2，第4阶段3，第5阶段第5阶段）中描述了有问题的钙化的Cnivarcocon，代表了来自中国，吉尔吉斯斯坦和韩国的劳伦西亚的第一个记录。通过穿透性磷化化产生的内模，镜面覆盖伴侣壁和隔膜的普形孔系统。将孔系统与胃胚胎网络的网络进行比较，该网络在现有日八陶瓷中分配息肉和周围的匍匐茎组织之间的营养物质。结合八角形式的珊瑚珊瑚和八十倍的隔膜对称，孔系统促进了坎布洛西亚对八陶瓷的分配，中肠道系统的基础思工。八陶瓷（'软珊瑚'）在现今的海洋中是多种多样的，但尽管有易于钙质植物的一般性发展，但仍具有较差的化石记录。新的分类塔：命令Cambroctoconida新; Cambroctoconus Koori新物种。

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《Journal of Paleontology》 |2017年第5期|共12页
作者
Peel John S.;
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Uppsala Univ Dept Earth Sci Palaeobiol Villavagen 16 SE-75236 Uppsala Sweden;

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正文语种 eng
中图分类古生物学;
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A problematic cnidarian (Cambroctoconus; Octocorallia?) from the Cambrian (Series 2-3) of Laurentia

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