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Distinguishing Borealosuchus and Brachychampsa teeth

Othniel C. Marsh

By Othniel C. Marsh
in General Fossil Discussion

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Othniel C. Marsh Regular Member

Othniel C. Marsh

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Is there actually any means of distinguishing Brachychampsa and Borealosuchus teeth, particularly those from the Hell Creek Formation? Insofar as I can see Brachychampsa teeth tend to more globular than those of Borealosuchus, but I have noticed that some Brachychampsa teeth, particularly those closer to the back of the jaw, can be quite elongate, so is there an identifying feature besides shape?

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ThePhysicist Regular Member

ThePhysicist

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According to Bennett (2012), anterior teeth are indistinguishable. Brachychampsa posterior teeth are bulbous and unlike those of Borealosuchus.

 

Bennett, GE. (2012) Community structure and paleoecology of crocodyliforms from the upper Hell Creek Formation (Maastrichtian), eastern Montana, based on shed teeth. Jeffersoniana. 2012;28:1–15.

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