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Re: Gastroliths in Chinese theropods
In a message dated 97-12-17 18:18:17 EST, email@example.com writes:
<< Gastroliths are a primitive archosaurian feature: birds have'm, crocs
have'm, and by using phylogenetic bracketing, all other archosaurs probably
had them. It is no more an aquatic feature than is the antorbital fenestra!
In modern flying birds, gastroliths help to grind up and digest the birdseed
they consume. I understand caged birds become very agitated when they're not
allowed to have tiny stones in their diets.