A new large−bodied theropod dinosaur from the Middle Jurassic of Warwickshire, United Kingdom

Benson, R. B. J. and Jonathan, D. (2010) A new large−bodied theropod dinosaur from the Middle Jurassic of Warwickshire, United Kingdom. Acta Palaeontologica Polonica, 55 (1). pp. 35-42. ISSN 0567-7920 EISSN: 1732-2421 DOI 10.4202/app.2009.0083

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Abstract

Previously undocumented postcranial material from the Chipping Norton Limestone Formation (Middle Jurassic: Lower Bathonian) of Cross Hands Quarry, near Little Compton, Warwickshire represents a new large−bodied theropod dinosaur,distinct from the contemporaneous Megalosaurus bucklandii. Cruxicheiros newmanorum gen. et sp. nov. is diagnosed by a single autapomorphy, the presence of a proximomedially inclined ridge within the groove that marks the lateral extent of the posterior flange of the femoral caput (trochanteric fossa). C. newmanorum shows three tetanuran features: widely separated cervical zygapophyses, a swollen ridge on the lateral surface of the iliac blade and an anterior spur of the caudal neural spines. However, due to fragmentary preservation its affinities within Tetanurae remain uncertain: phylogenetic analysis places it as the most basal tetanuran, the most basal megalosauroid(=spinosauroid) or the most basal neotetanuran.

Item Type:	Article
Uncontrolled Keywords:	09AREP; IA60;
Subjects:	04 - Palaeobiology
Divisions:	04 - Palaeobiology
Journal or Publication Title:	Acta Palaeontologica Polonica
Volume:	55
Page Range:	pp. 35-42
Identification Number:	10.4202/app.2009.0083
Depositing User:	Sarah Humbert
Date Deposited:	16 Mar 2010 11:11
Last Modified:	23 Jul 2013 09:56
URI:	http://eprints.esc.cam.ac.uk/id/eprint/1342

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