The Early Devonian eurypterid              Leiopterella tetliei              from Arctic Canada

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

doi:10.1139/cjes-2021-0015

The Early Devonian eurypterid Leiopterella tetliei from Arctic Canada

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

Department of Life Sciences

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Abstract

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 language	English
Pages (from-to)	1-7
Number of pages	7
Journal	Canadian Journal of Earth Sciences
Volume	58
Issue number	12
Early online date	29 Oct 2021
DOIs	https://doi.org/10.1139/cjes-2021-0015
Publication status	Published - 31 Dec 2021

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title = "The Early Devonian eurypterid Leiopterella tetliei from Arctic Canada",

abstract = "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.",

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AU - Bonsor, Joseph A.

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AB - 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.

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DO - 10.1139/cjes-2021-0015

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The Early Devonian eurypterid Leiopterella tetliei from Arctic Canada

Abstract

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