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Abstract
The teeth of two new genera of jalodontid sharks have been found in the strata of the Middle Permian in the Guadalupe Mountains area of West Texas. Isacrodus marthae gen. et sp. nov. occurs in the Williams Ranch Member, Cutoff Formation, Roadian. A second taxon Texasodus varidentatus gen. et sp. nov. is found in beds of the Hegler and Pinery Members, Bell Canyon Formation, Upper Wordian–Lower Capitanian. The family Jalodontidae includes Jalodus, Adamantina and the two new genera; Isacrodus and Texasodus.
Acknowledgements
We are grateful to M. Ginter (Warsaw) and O. Lebedev (Moscow) for useful discussions, as well as to anonymous reviewers for their constructive comments. AI acknowledges Saint-Petersburg State University for research grants. The trip of AI to Texas, USA, and the participation in the Early/Lower Vertebrate Symposium in Dallas were supported financially by Saint-Petersburg State University (Travel Grant 3.41.896.2011) and the Russian Foundation of Basic Researches (Travel Grant 11-05-08108-3).
Notes
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