在Oanducystis (col.) Stukalina (crioidea)上，来自埃尔郡格文区克雷格黑德石灰岩地层

IF 0.5 4区地球科学 Q4 GEOLOGY

Scottish Journal of Geology Pub Date : 2020-02-14 DOI:10.1144/sjg2019-022

S. Donovan, N. Clark

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引用次数: 0

摘要

只有两种名义上的海百合，即双壳海鞘藻Diabolocrinus craigheadensis Ramsbottom和Diaboloclinus globularis（Nicholson和Etheridge），在奥陶纪（查特菲尔德阶；Sandbian）艾尔郡Girvan附近的Craighead采石场Craighead石灰岩组被描述。相比之下，柱状形态分类群有20多个分类群，包括开放命名的分类群。Craighead采石场的两个鞘被称为Diabolocrinus sp.或spp.。保留了与同一地区的Oanducystis（col.）spp.标本相似的茎切面特征。这些柱状形态分类群与Diabolocrinus同义，并保留为开放命名法。然而，Diabolocrinus仅限于Laurentia，而Oanducystis（col.）Stukalina的其余形态物种仅限于哈萨克斯坦和爱沙尼亚。

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On Oanducystis (col.) Stukalina (Crinoidea) from the Craighead Limestone Formation, Girvan district, Ayrshire

Only two nominal species of crinoid, the diplobathrid camerates Diabolocrinus craigheadensis Ramsbottom and Diabolocrinus globularis (Nicholson and Etheridge), have been described from the Ordovician (Chatfieldian; Sandbian) Craighead Limestone Formation, Craighead Quarry, near Girvan, Ayrshire. In contrast, columnal morphotaxa are represented by over 20 taxa including those in open nomenclature. Two thecae from Craighead Quarry and referred to Diabolocrinus sp. or spp. preserve features of the stem facet that are similar to specimens referred to Oanducystis (col.) spp. from the same locality. These columnal morphotaxa are synonymized with Diabolocrinus and left in open nomenclature. However, Diabolocrinus is limited to Laurentia, whereas the remaining morphospecies of Oanducystis (col.) Stukalina are limited to Kazakhstan and Estonia.

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来源期刊

Scottish Journal of Geology 地学-地质学

CiteScore

1.70

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Although published only since 1965, the Scottish Journal of Geology has a long pedigree. It is the joint publication of the Geological Society of Glasgow and the Edinburgh Geological Society, which prior to 1965 published separate Transactions: from 1860 in the case of Glasgow and 1863 for Edinburgh. Traditionally, the Journal has acted as the focus for papers on all aspects of Scottish geology and its contiguous areas, including the surrounding seas. The publication policy has always been outward looking, with the Editors encouraging review papers and papers on broader aspects of the Earth sciences that cannot be discussed solely in terms of Scottish geology. The diverse geology of Scotland continues to provide an important natural laboratory for the study of earth sciences; many seminal studies in geology have been carried out on Scottish rocks, and over the years the results of much of this work had been published in the Journal and its predecessors. The Journal fully deserves its high reputation worldwide and intends to maintain its status in the front rank of publications in the Earth sciences.