Geological Magazine



Original Article

The first relatively complete exoccipital-opisthotic from the braincase of the Callovian pliosaur, Liopleurodon


LESLIE F. NOÈ a1c1, JEFF LISTON a2 and MARK EVANS a3
a1 The Sedgwick Museum, Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK
a2 Institute of Biological and Life Sciences (IBLS), University of Glasgow, Glasgow G12 8QQ, UK
a3 New Walk Museum, Leicester LE1 7EA, UK

Abstract

A newly recognized left exoccipital-opisthotic of a Callovian pliosaur, derived from the Peterborough or lower Stewarby Members of the Oxford Clay Formation of Peterborough, is described and figured. This isolated bone is tentatively identified as belonging to an ‘adult’ individual of Liopleurodon ferox that is inferred to have had a skull length of 1.26 metres and an overall body length of 6.39 metres.

(Received August 13 2002)
(Accepted March 20 2003)


Key Words: Jurassic; Callovian; Sauropterygia; Plesiosauria; braincases.

Correspondence:
c1 Author for correspondence: lnoe01@esc.cam.ac.uk


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