TrogTrogBlog: Gizzard stones
Equine: Enterolith (stomach stone) [960X720] : r/ThingsCutInHalfPorn
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File:Dinosaur gastrolith (likely from the Morrison Formation, Upper Jurassic; western USA) 3.jpg - Wikimedia Commons
Deinocheirus, Prehistoric Planet Wiki
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I leoni mangiano gli struzzi? - Quora