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PalaeovertebrataVol. 26, Fasc. 1-4:35-59. 1997
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La morphologie dentaire des Thalattosuchia (Crocodylia, Mesosuchia).
Patrick VignaudKeywords: Dental morphology; Dental types; feeding habits.; Jurassic; Metriorhynchidae; systematics; Teleosauridae; Thalattosuchia
Cite this article: Vignaud P., 1997. La morphologie dentaire des Thalattosuchia (Crocodylia, Mesosuchia). Palaeovertebrata 26 (1-4): 35-59.
The tooth morphology of the Thalattosuchia (marine crocodilians from the Jurassic and the Early Cretaceous) is analysed. The Callovian from Poitou and the Kimmeridgian from Quercy have yielded many remains of Metriorhynchus, Steneosaurus and Machimosaurus. These remains allow us to study the variations of tooth morphology during ontogenic growth, tooth replacement and the location of the teeth. We have defined different tooth types for these genera. In Metriorhynchus, the two tooth types defined do not coincide with the two groups recognized in the Callovian (broad-skulled and narrow-skulled metriorhynchids) but reﬂect the prey preferences of these forms. In Steneosaurus and Machimosaurus the ﬁve tooth types deñned are in agreement with the main taxa known from the Bathonian to the Early Cretaceous. This study allows to precise the function and the prey preference of the Thalattosuchia during the Jurassic and the Early Cretaceous.
Published in Vol. 26, Fasc. 1-4 (1997)