The Early Devonian eurypterid Leiopterella tetliei from Arctic Canada

Simon J. Braddy, Jason A. Dunlop, Joseph A. Bonsor

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The stylonurid eurypterid Leiopterella tetliei Lamsdell, Braddy, Loeffler, and Dineley, 2010 (Chelicerata: Eurypterida: Rhenopteridae) from the Early Devonian (Lochkovian) of Nunavut in Arctic Canada is redescribed. Restudy of the holotype under polarized light revealed a labrum, epistomal sutures, prosomal appendage III, and deltoid plates anterior to the genital appendage. An additional new specimen preserves the distal podomeres of appendage VI and gradually tapering opisthosomal tergites. The characters resolved here support the hypothesis that L. tetliei was relatively basal within the wider Stylonurina clade, with its tapering postabdomen supporting a more basal position within Rhenopteridae than previously suggested.
Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalCanadian Journal of Earth Sciences
Issue number12
Early online date29 Oct 2021
Publication statusPublished - 31 Dec 2021


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