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Gastroliths
Sam Girouard wrote:
>Perhaps gastroliths are not proof positive of herbivory, since
crocodilians among other aquatic reptiles (including plesiosaurs) swallow
stones and they are exclusively carnivorous. Of course, this is not a
digestive aid in these animals as much as ballast for swimming, but it
goes to show that gastroliths are not detrimental to the digestion of
meat.<
My understanding is that Bakker x-rayed crocodile digestive tracts while
at Harvard and determined that gastroliths do play a role in crocodile
digestion. I don't know if he ever published on this, but perhaps others
have a reference.