{"title":"A new “slime star” (Echinodermata, Asteroidea, Velatida) from the Upper Cretaceous Chalk of the United Kingdom","authors":"Andy S. Gale","doi":"10.1016/j.pgeola.2022.12.001","DOIUrl":null,"url":null,"abstract":"<div><p>New material of pterasterid asteroids from the UK chalk is described on the basis of ossicles recovered from washed residues. A new species, <em>Pteraster lyddenensis</em><span> sp. nov., is erected for oral and adambulacral ossicles and a primary radial ossicle from the Cenomanian Grey Chalk Subgroup of Dover (Kent), and the first UK record of </span><em>Pteraster kutscheri</em><span> Gale, 2022 is described from the upper Campanian Chalk of Norwich (Norfolk); both taxa belong to extant groups of </span><em>Pteraster</em>. <em>Pteraster lyddenensis</em><span> sp. nov. is the oldest known representative of the genus. The benthic invertebrate fauna of the Cretaceous chalk facies includes a number of extant genera which at the present day dwell in the deep sea. However, their presence was probably due to the low-productivity oceanic palaeoenvironment of the Chalk Sea, simulating deep-ocean conditions, rather than its depth.</span></p></div>","PeriodicalId":49672,"journal":{"name":"Proceedings of the Geologists Association","volume":null,"pages":null},"PeriodicalIF":1.2000,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Geologists Association","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S001678782200092X","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Earth and Planetary Sciences","Score":null,"Total":0}
引用次数: 0
Abstract
New material of pterasterid asteroids from the UK chalk is described on the basis of ossicles recovered from washed residues. A new species, Pteraster lyddenensis sp. nov., is erected for oral and adambulacral ossicles and a primary radial ossicle from the Cenomanian Grey Chalk Subgroup of Dover (Kent), and the first UK record of Pteraster kutscheri Gale, 2022 is described from the upper Campanian Chalk of Norwich (Norfolk); both taxa belong to extant groups of Pteraster. Pteraster lyddenensis sp. nov. is the oldest known representative of the genus. The benthic invertebrate fauna of the Cretaceous chalk facies includes a number of extant genera which at the present day dwell in the deep sea. However, their presence was probably due to the low-productivity oceanic palaeoenvironment of the Chalk Sea, simulating deep-ocean conditions, rather than its depth.
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.
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