A forefin of Leptonectes solei from the Lower Jurassic (Pliensbachian) of Dorset, UK

Dean R. Lomax; Judy A. Massare

doi:10.1016/j.pgeola.2018.07.005

A forefin of Leptonectes solei from the Lower Jurassic (Pliensbachian) of Dorset, UK

Dean R. Lomax, Judy A. Massare

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Abstract

An incomplete forefin in the collections of the National Museum of Wales, Cardiff, is herein assigned to the rare leptonectid species, Leptonectes solei, known only from the west Dorset coast. It is only the third specimen of the species and is smaller than both the holotype and referred specimen. The new specimen is from the Lower Jurassic (lower Pliensbachian, Charmouth Mudstone Formation, Tragophylloceras ibex Ammonite Zone, Acanthopleuroceras valdani Ammonite Subzone) of Seatown, Dorset, UK. It confirms that all three species of Leptonectes were present in the Pliensbachian and expands the known diversity of ichthyosaurs for that time period. We show that isolated forefins of Leptonectes can be assigned to a species with a high degree of confidence.

Original language	English
Pages (from-to)	770-773
Number of pages	4
Journal	Geologists' Association. Proceedings
Volume	129
Issue number	6
Early online date	1 Sept 2018
DOIs	https://doi.org/10.1016/j.pgeola.2018.07.005
Publication status	Published - 1 Dec 2018

Keywords

Early Jurassic
Ichthyosauria
Leptonectes solei
Leptonectidae
Pliensbachian

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10.1016/j.pgeola.2018.07.005

Lomax Massare AAMAccepted author manuscript, 39.1 KB

https://linkinghub.elsevier.com/retrieve/pii/S0016787818301184

ICAL: Interdisciplinary Centre for Ancient Life
Garwood, R. (PI), Wogelius, R. (PI), Sansom, R. (CoI), Buckley, M. (CoI), Chamberlain, A. (CoI), Manning, P. (CoI), Egerton, V. (CoI), Sellers, W. (CoI), Nudds, J. (CoI), Bulot, L. G. (CoI), Brocklehurst, R. (PGR student), Brassey, C. A. (CoI), Keating, J. (CoI), La Porta, A. (CoI), Brocklehurst, R. (PGR student), Callender-Crowe, L. (PGR student), Wallace, E. (PGR student), Chester, J. (PGR student), Davenport, J. (PGR student), Tuley, K. (PGR student), Lomax, D. (Researcher), Reeves, J. (PGR student), Smart, C. (PGR student), Ferro, C. (PGR student), Karoullas, C. (PGR student), Heath, J. (PGR student), Dickson, A. (PGR student), Austin Sydes, L. (PGR student), McLean, C. (PGR student), Harvey, V. (PGR student) & Jones, K. (PI)
Project: Research

Cite this

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title = "A forefin of Leptonectes solei from the Lower Jurassic (Pliensbachian) of Dorset, UK",

abstract = "An incomplete forefin in the collections of the National Museum of Wales, Cardiff, is herein assigned to the rare leptonectid species, Leptonectes solei, known only from the west Dorset coast. It is only the third specimen of the species and is smaller than both the holotype and referred specimen. The new specimen is from the Lower Jurassic (lower Pliensbachian, Charmouth Mudstone Formation, Tragophylloceras ibex Ammonite Zone, Acanthopleuroceras valdani Ammonite Subzone) of Seatown, Dorset, UK. It confirms that all three species of Leptonectes were present in the Pliensbachian and expands the known diversity of ichthyosaurs for that time period. We show that isolated forefins of Leptonectes can be assigned to a species with a high degree of confidence.",

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N2 - An incomplete forefin in the collections of the National Museum of Wales, Cardiff, is herein assigned to the rare leptonectid species, Leptonectes solei, known only from the west Dorset coast. It is only the third specimen of the species and is smaller than both the holotype and referred specimen. The new specimen is from the Lower Jurassic (lower Pliensbachian, Charmouth Mudstone Formation, Tragophylloceras ibex Ammonite Zone, Acanthopleuroceras valdani Ammonite Subzone) of Seatown, Dorset, UK. It confirms that all three species of Leptonectes were present in the Pliensbachian and expands the known diversity of ichthyosaurs for that time period. We show that isolated forefins of Leptonectes can be assigned to a species with a high degree of confidence.

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KW - Ichthyosauria

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KW - Leptonectidae

KW - Pliensbachian

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DO - 10.1016/j.pgeola.2018.07.005

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JF - Geologists' Association. Proceedings

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A forefin of Leptonectes solei from the Lower Jurassic (Pliensbachian) of Dorset, UK

Abstract

Keywords

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ICAL: Interdisciplinary Centre for Ancient Life

Cite this