A new neoselachian shark from the marine Early Cretaceous of Southern England

IF 1.2 4区地球科学 Q2 Earth and Planetary Sciences

Proceedings of the Geologists Association Pub Date : 2023-06-01 DOI:10.1016/j.pgeola.2023.03.003

Trevor J. Batchelor , Christopher J. Duffin

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引用次数: 1

Abstract

Rare, isolated teeth of Corysodon multicristatus sp. nov. are described from two levels in the Atherfield Clay Formation (Early Aptian, Early Cretaceous) of Atherfield Point on the Isle of Wight, UK. Ten teeth of the new species were recovered from 1095 kg of washed and graded sediment residues. The teeth themselves are very small (around 0.5 mm high) and possess a distinctive crown bearing a tiered series of transverse crests adapted for rasping. Details of the dental architecture of the Atherfield Clay Formation specimens clearly indicate that the Cretaceous material differs significantly from the teeth of the type species for the genus, Corysodon cirinensis, recorded from the Kimmeridgian of northern France and Switzerland. C. multicristatus is the first substantiated record of the genus from the Early Cretaceous, thereby extending the stratigraphic range of the genus from the latest Jurassic, and the geographical range from continental Europe to the UK.

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英格兰南部白垩纪早期海洋中的一种新的新塞拉奇鲨鱼

在英国怀特岛阿瑟菲尔德角的阿瑟菲尔德粘土组（早阿普第阶，早白垩纪）的两个层面上，描述了Corysodon multicritatus sp.nov.罕见的孤立牙齿。1095年发现了10颗新物种的牙齿 kg经清洗和分级的沉积物残留物。牙齿本身非常小（大约0.5 mm高），并且具有独特的冠部，该冠部具有适于锉削的一系列分层的横向冠部。阿瑟菲尔德粘土组标本的牙齿结构细节清楚地表明，白垩纪的物质与该属模式物种卷须珊瑚的牙齿有很大不同，卷须珊瑚记录于法国北部和瑞士的Kimmeridian。C.multicristatus是白垩纪早期第一个证实的该属记录，从而扩展了该属从侏罗纪晚期的地层范围，以及从欧洲大陆到英国的地理范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of the Geologists Association 地学-地质学

CiteScore

2.70

自引率

8.30%

发文量

审稿时长

6-12 weeks

期刊介绍： The Proceedings of the Geologists'' Association is an international geoscience journal that was founded in 1859 and publishes research and review papers on all aspects of Earth Science. In particular, papers will focus on the geology of northwestern Europe and the Mediterranean, including both the onshore and offshore record. Following a long tradition, the PGA will focus on: i) a range of article types (see below) on topics of wide relevance to Earth Sciences ii) papers on aspects of Earth Science that have societal relevance including geoconservation and Earth management, iii) papers on palaeoenvironments and palaeontology of the Mesozoic and Cenozoic, iv) papers on aspects of Quaternary geology and climate change, and v) papers on the history of geology with particular reference to individuals that have shaped the subject. These topics will also steer the content of the themes of the Special Issues that are published in the PGA.