Dr. Femke Holwerda, a postdoctoral fellow, is researching mosasaurs from the Bearpaw Formation in southern Alberta. Seated beside her is Prognathodon overtoni, a mosasaur that existed during the Late Cretaceous and is distinguished by its remarkably robust jaws.

Postdoctoral fellow Dr. Femke Holwerda studies mosasaurs from the Bearpaw Formation of southern Alberta. Here, she’s sitting next to Prognathodon overtoni, a mosasaur that lived during the Late Cretaceous.

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This specimen is notable for its particularly heavy set of jaws.

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Dr. Holwerda is creating a mold of some of this specimen’s teeth.

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After creating the molds, Dr. Holwerda will be able to create cast teeth to study. This will allow her to сoпfігm the differences in feeding style among marine reptiles based on each tooth’s wear.

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