Caridoid crustaceans from the Ballagan Formation (Tournaisian, Lower Carboniferous) of Willie's Hole, Chirnside, Scottish Borders, UK

IF 0.9 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Earth and Environmental Science Transactions of the Royal Society of Edinburgh Pub Date : 2024-03-08 DOI:10.1017/s1755691024000045

Neil D. L. CLARK, Andrew J. ROSS

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Abstract

The descriptions of two co-occurring cardioid crustaceans from the Ballagan Formation (Tournaisian, Lower Carboniferous) of Chirnside, Scottish Borders, help to resolve the taxonomy of the genus Tealliocaris. Tealliocaris robusta Peach, 1908 is assigned to Schramocaris to form S. robusta (Peach, 1908) comb. nov. on the basis of morphological characters such as the rugosity and position of the branchial carinae as well as the nature of the pleon, and becomes the earliest representative of this genus in Scotland. A new species of Tealliocaris is also recognised from this locality and is described as T. briggsi sp. nov., based on the smooth carapace, lack of pleonic grooves and the number of spines on the scaphocerite and lateral margin of the anterior carapace. The systematic position of the Pendleian specimens identified by Peach (1908) as ‘Tealliocaris robusta var.’ is finally resolved and described as T. weegie sp. nov.

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英国苏格兰边界奇恩塞德威利洞巴拉干地层（下石炭统，图尔奈斯统）中的腕甲壳动物

对苏格兰边界Chirnside的Ballagan地层（Tournaisian，下石炭统）中两种共生心形甲壳类的描述有助于解决Tealliocaris属的分类问题。根据形态特征，如褶皱、鳃瓣的位置以及褶的性质，Tealliocaris robusta Peach, 1908 被归入 Schramocaris，形成 S. robusta (Peach, 1908) comb.根据其光滑的甲壳、缺乏胸膜沟纹以及鳞甲和前甲壳侧缘上的棘数量，该地点还发现了 Tealliocaris 的一个新种，并将其描述为 T. briggsi sp.由 Peach（1908 年）鉴定为 "Tealliocaris robusta var. "的 Pendleian 标本的系统定位最终得到解决，被描述为 T. weegie sp.

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来源期刊

Earth and Environmental Science Transactions of the Royal Society of Edinburgh 地学-地球科学综合

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2.00

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0.00%

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期刊介绍： Earth and Environmental Science Transactions (formerly Transactions of the Royal Society of Edinburgh: Earth Sciences) is a general earth sciences journal publishing a comprehensive selection of substantial peer-reviewed research papers, reviews and short communications of international standard across the broad spectrum of the Earth and its surface environments. The journal prides itself on the quality of its graphics and photographic reproduction. The Editors are keen to encourage interdisciplinary papers and Transactions also publishes occasional special symposia and invited volumes of specific interest. We are currently in the process of digitising the archive of RSE Publications, and the archive of the Transactions, dating back to 1788, will be available from the back issues link on this site.