2.1" Sauropod Dinosaur Stomach Stone Gastrolith Rock Gizzard Stone COA
Location: Cloverly Formation, Montana
Weight: 4.9 Ounces
Dimensions: 2.1 Inches Long, 2 Inches Wide, 1.5 Inches Thick
Comes with a Certificate of Authenticity.
The item pictured is the one you will receive.
This is a real Gastrolith.
Gastrolith stones found in the Cloverly Formation are actually Polished stomach stones from large dinosaurs! They are very beautiful and come from Sauropod Dinosaurs like Titanosaurs. They are also called Gastroliths. Found only in a few locations in Southern Montana.
Confirming a sauropod gastrolith demands uncompromising paleontological evidence. Three decisive criteria separate authentic stomach stones from geological red herrings: the rock must chemically diverge from its surrounding formation, bear the unmistakable burnish of internal gizzard grinding—not passive weathering—and rest in direct association with dinosaur remains. That final requirement? It's the gatekeeper that eliminates most contenders. Polished stones discovered in isolation invite skepticism, easily written off as wind or water artifacts. This specimen shatters that uncertainty with verified skeletal proximity and authenticated documentation, delivering irrefutable testimony to how these colossal herbivores engineered their digestive systems to process massive quantities of vegetation.
