Two new basal crocodylomorph archosaurs from the Lower Jurassic and the monophyly of the Sphenosuchia |
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| Authors: | James M. Clark, Hans-Dieter Sues FLS,&dagger |
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| Affiliation: | Department of Biological Sciences, George Washington University, Washington, DC 20052, USA,;Department of Palaeobiology, Royal Ontario Museum, 100 Queen's Park, Toronto, ON M5S 2C6, and Department of Zoology, University of Toronto, Toronto, ON M5S 3G5, Canada |
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| Abstract: | We report on and name two new taxa of basal crocodylomorph archosaurs from the Lower Jurassic, Litargosuchus leptorhynchus gen. et sp. nov. , from the upper Elliot Formation (Stormberg Group) of South Africa, and Kayentasuchus walkeri gen. et sp. nov. , from the Kayenta Formation (Glen Canyon Group) of Arizona, USA. Examination of this material led to a reconsideration of basal crocodylomorph interrelationships. A phylogenetic analysis found no support for the monophyly of Sphenosuchia. © 2002 The Linnean Society of London. Zoological Journal of the Linnean Society , 2002, 136 , 77–95. |
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| Keywords: | Reptilia Crocodylomorpha Sphenosuchia anatomy phylogeny Jurassic |
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