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Two new eurypterids (Arthropoda, Chelicerata) from the upper Silurian Yulongsi Formation of south-west China

Published online by Cambridge University Press:  20 May 2022

Zhiheng Ma
Affiliation:
School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan, China <[email protected]>
Paul A. Selden
Affiliation:
Department of Geology, University of Kansas, Lawrence, Kansas, USA Natural History Museum, London, UK
James C. Lamsdell
Affiliation:
Department of Geology and Geography, West Virginia University, Morgantown, West Virginia, USA
Tingshan Zhang*
Affiliation:
School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan, China <[email protected]>
Jingwen Chen
Affiliation:
Fujian Key Laboratory of Mineral Resources, Fuzhou University, Fuzhou, China
Xi Zhang
Affiliation:
School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan, China <[email protected]>
*
*Corresponding author.

Abstract

Two new eurypterids, a pterygotid Erettopterus qujingensis n. sp., and a slimoniid, Slimonia sp., are described from the upper Silurian (Pridolian) Yulongsi Formation of Yunnan Province, China. Erettopterus qujingensis n. sp. is characterized by several inversely curved ramus denticles and a metastoma with a deep notch in the center. The discovery not only extends the geographic extent of the genus Erettopterus and Slimonia from Euramerica to southwest China, but also gives insight into the similarity of ecosystem structures across the Silurian world.

UUID: http://zoobank.org/939e82cd-58fc-415b-9209-514aecef2267

Type
Articles
Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press on behalf of The Paleontological Society

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