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首页> 外文期刊>Alcheringa: An Australasian Journal of Palaeontology >Lower Ordovician trilobites from the Septembers? formation, North-East Greenland
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Lower Ordovician trilobites from the Septembers? formation, North-East Greenland

机译：九月的下奥陶纪三叶虫？东北格陵兰编队

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摘要

The informally named Septembers? formation is a 76 m thick succession of microbial and peritidal shelf carbonates deposited on the North-East Greenland shelf of Laurentia. The formation, assigned to the lower part of the Cape Weber Formation in all previous studies, lies disconformably upon the Skullrockian Antiklinalbugt Formation (revised) and conformably below the Tulean to Blackhillsian Cape Weber Formation (revised) in the Fimbulfjeld Group. With the exception of Randaynia, the modest trilobite fauna recovered from the Septembers? formation consists exclusively of bathyurids, and all represent new species. Both Chapmanopyge knudseni sp. nov. and Punka adamsi sp. nov. are represented by sufficient material to merit specific names. The remaining taxa, belonging to Bolbocephalus, Peltabellia, Randaynia and Chapmanopyge are left in open nomenclature. The trilobite genera present suggest that the Septembers? formation is referable to the Tulean Stage of the Ibexian Series, latest Tremadocian/earliest Floian in Global Standard terms.
机译：非正式地命名为9月？地层是沉积在Laurentia东北格陵兰陆架上的76 m厚的微生物和蠕动陆架碳酸盐岩。在先前的所有研究中，该地层均归属于韦伯角岩层下部，该岩层不符合标准地位于Skullrockian Antiklinalbugt岩层（修订版）上，而Fimbulfjeld组中的Tulean至Blackhillsian韦伯角岩层（修订版）之下则一致。除了Randaynia外，从九月恢复的温和的三叶虫动物区系？形成仅由浴鳞茎组成，并且都代表新物种。两个Chapmanopyge knudseni sp。十一月和Punka adamsi sp。十一月用足以代表特定名称的材料来表示。剩下的属于Bolbocephalus，Peltabellia，Randaynia和Chapmanopyge的分类单元保留在开放命名法中。目前的三叶虫属暗示九月？编组可参考Ibexian系列的Tulean阶段，即全球标准术语中最新的Tremadocian /最早的Floian。

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