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Middle Ordovician linguliformean microbrachiopods from western Argentina: new data and biogeographic implications
Journal of Paleontology ( IF 1.4 ) Pub Date : 2021-03-26 , DOI: 10.1017/jpa.2021.19
Fernando J. Lavié , Ana I. Mestre , Marcelo G. Carrera

New linguliform microbrachiopods from the Middle Ordovician are described and illustrated. This fauna was recovered from the uppermost beds of the San Juan Formation in two sections of the Central Precordillera (Argentina), which are accurately dated to the Lenodus pseudoplanus Zone (middle Darriwilian). The fauna consists of the obolid Luthieria diminuta n. gen. n. sp., and the acrotretids Eoconulus tucunucoensis n. sp., Conotreta andina Lavié, Serra, and Feltes, Scaphelasma zharykensis Popov, and Numericoma rowelli Holmer et al. This low-diversity lingulate association displays close similarities with coeval faunas that inhabited the Laurentia, Baltica, and Kazakhstanian regions, in agreement with evidence from other linguliform and rhynchonelliform brachiopods.UUID: http//zoobank.org/fe9acbb0-6654-4462-ba4d-ea2386ae79f6

中文翻译:

来自阿根廷西部的中奥陶世舌形小臂足类动物:新数据和生物地理学意义

描述和说明了来自中奥陶世的新舌状微型腕足动物。这种动物群是从中央前记录列拉(阿根廷)的两个部分的圣胡安组最上层的地层中发现的,这些地层的准确年代可追溯到假扁平足区域(中达里维利安)。动物群包括Luthieria diminutan. 将军 n. sp. 和 acrotretids土库南始石n. sp.,安迪纳琴拉维、塞拉和费尔特斯,蛞蝓波波夫和茯苓霍尔默等人。这种低多样性的舌状动物协会与居住在劳伦蒂亚、波罗的海和哈萨克斯坦地区的同时代动物群具有密切的相似性,这与其他舌状和喉状腕足类动物的证据一致。UUID:http//zoobank.org/fe9acbb0-6654-4462-ba4d-ea2386ae79f6
更新日期:2021-03-26
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