ABSTRACT Isolated microscopic spicules from disarticulated scleritomes demonstrate the presence of a diverse sponge fauna otherwise not evident from the macrofossil record in carbonate successions deposited during the un-named Cambrian Series 2 and Cambrian Series 3 (Miaolingian) in North Greenland. Most of the spicule morphotypes are not recognised from faunas of articulated sponges known from contemporaneous siliciclastic strata elsewhere. Assemblages are described in terms of four Cambrian stages and contain numerous spicule morphotypes not previously recorded from Laurentia. Many of the spicules can be correlated worldwide, however, extending current knowledge of the biogeographic distribution of sponge spicule-based taxa in the Cambrian. In particular, similar Cambrian Stage 4 (Series 2) and Miaolingian assemblages (Wuliuan, Drumian and Guzhangian stages) faunas are recorded from tropical palaeolatitudes in Australia, South China, Siberia and Laurentia, although this may in part reflect a methodology focused on the preparation of the carbonate samples that dominate these successions. New spicule-based taxa: Eiffelia floriformis n. sp., Australispongia? inuak n. sp., Celtispongia dorte n. gen. n. sp., Sanningasoqia borealis n. gen. n. sp., Speciosuspongia inughuitorum n. sp., Sulukispicula gelidae n. gen. n. sp.

中文翻译：

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来自北格陵兰（劳伦特）寒武纪（系列 2-3）的海绵骨针组合：系统学和生物地理学

摘要 从脱节的巩膜分离出的微观针状体表明存在多样化的海绵动物群，否则在北格陵兰未命名的寒武纪系列 2 和寒武纪系列 3（苗陵阶）沉积的碳酸盐岩层序中的宏观化石记录中并不明显。大多数针状体形态类型无法从其他地方同期硅质碎屑岩层中已知的关节海绵动物群中识别出来。组合被描述为四个寒武纪阶段，并包含许多先前未从劳伦西亚记录的骨刺形态类型。然而，许多针状体可以在世界范围内相互关联，从而扩展了目前对寒武纪海绵体针状类群生物地理分布的了解。特别是类似的寒武纪第 4 期（系列 2）和苗岭期组合（五六，Drumian 和 Guzhangian 阶段）动物群是从澳大利亚、华南、西伯利亚和 Laurentia 的热带古纬度记录的，尽管这可能部分反映了一种专注于制备主导这些序列的碳酸盐样品的方法。新的基于针刺的分类群：Eiffelia floriformis n。sp., 澳大利亚海绵？伊努阿克 sp., Celtispongia dorte n. 将军 n. sp., Sanningasoqia borealis n. 将军 n. sp., Speciosuspongia inughuitorum n. sp., Sulukispicula gelidae n. 将军 n. sp. Sanningasoqia borealis n. 将军 n. sp., Speciosuspongia inughuitorum n. sp., Sulukispicula gelidae n. 将军 n. sp. Sanningasoqia borealis n. 将军 n. sp., Speciosuspongia inughuitorum n. sp., Sulukispicula gelidae n. 将军 n. sp.