A Silurian (Homerian) pelmatozoan echinoderm fauna from west-central Ohio, USA

IF 1.3 4区地球科学 Q3 PALEONTOLOGY

Journal of Paleontology Pub Date : 2023-12-13 DOI:10.1017/jpa.2023.74

W. Ausich, Chuck Ciampaglio, Alexander J. Fabian, Jeremy R. Myers

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Abstract

A diverse echinoderm fauna lived in reef and non-reef Silurian facies of the upper Midwestern USA. However, these faunas are dominantly preserved in dolostones with moldic preservation, and fossils from dolostone facies have not been documented to the extent of Silurian crinoids in nondolostone strata. Herein, an echinoderm fauna is described from the dolostones of the Cedarville Member of the Laurel Limestone (Wenlock, Homerian) from the Pepcon Cement Quarry in west-central Ohio. The described fauna contains blastoids, hemicosmitoids, and crinoids, including Troosticrinus subcylindricus (Hall and Whitfield, 1875); Caryocrinites sp. indet.; an unidentifiable diplobathrid camerate; Periechocrinus tennesseensis (Hall and Whitfield, 1875); Periechocrinus egani? (Miller, 1881); Stiptocrinus farringtoni (Slocom, 1908); Calliocrinus primibrachialis Busch, 1943; Calliocrinus poepplemani new species; Calliocrinus hadros new species; and Lecanocrinus sp. indet. Generic concepts for the Eucalyptocrinitidae are clarified; and, surprisingly, Eucalyptocrinites Goldfuss, 1831 is absent from this fauna. Additionally, lectotypes and paralectotypes are designated for Periechocrinus tennesseensis and Calliocrinus primibrachialis. UUID: http://zoobank.org/a8c8e7e3-9bc3-4078-83bd-5572816366e5

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美国俄亥俄州中西部的志留纪（荷马纪）棘皮动物群

美国中西部上部的志留纪暗礁和非暗礁岩层中生活着多种棘皮动物群。然而，这些动物群主要保存在白云岩中，并以霉菌的形式保存，而白云岩地层中的化石还没有像非白云岩地层中的志留纪棘皮动物化石那样被记录下来。本文描述了俄亥俄州中西部 Pepcon 水泥采石场劳雷尔石灰岩（文洛克、荷美尔）锡达维尔组白云岩中的棘皮动物群。所描述的动物群包括鼓泡类、半软骨类和脊索动物，其中包括 Troosticrinus subcylindricus（Hall 和 Whitfield，1875 年）；Caryocrinites sp.indet.；一种无法辨认的二裂片脊索动物；Periechocrinus tennesseensis（Hall 和 Whitfield，1875 年）；Periechocrinus egani？(Miller, 1881); Stiptocrinus farringtoni (Slocom, 1908); Calliocrinus primibrachialis Busch, 1943; Calliocrinus poepplemani 新种; Calliocrinus hadros 新种; 以及 Lecanocrinus sp.Eucalyptocrinitidae 的属概念得到了澄清；令人惊讶的是，该动物群中没有 Eucalyptocrinites Goldfuss, 1831。此外，还指定了 Periechocrinus tennesseensis 和 Calliocrinus primibrachialis 的模式和副模式。UUID: http://zoobank.org/a8c8e7e3-9bc3-4078-83bd-5572816366e5

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来源期刊

Journal of Paleontology 地学-古生物学

CiteScore

2.80

自引率

7.10%

发文量

审稿时长

6-12 weeks

期刊介绍： The Journal of Paleontology publishes original articles and notes on the systematics, phylogeny, paleoecology, paleogeography, and evolution of fossil organisms. It emphasizes specimen-based research and features high quality illustrations. All taxonomic groups are treated, including invertebrates, microfossils, plants, vertebrates, and ichnofossils.