A forefin of Leptonectes solei from the Lower Jurassic (Pliensbachian) of Dorset,UK |
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| Authors: | Dean R Lomax Judy A Massare |
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| Institution: | 1. School of Earth and Environmental Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK;2. Department of Earth Sciences, State University of New York, College at Brockport, Brockport, NY, 14420, USA |
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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. |
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| Keywords: | Ichthyosauria Pliensbachian Early Jurassic Leptonectidae |
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