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about 80 million to 78 million years ago
For researchers and collectors
this petrified wood specimen documents a geological narrative spanning 66 to 225 million years
What is certain is that Prognathodon was not the only mosasaur to adjust to this diet
prompting a reassessment of the timing and correlation of Mediterranean marine terraces
2.1" Sauropod Dinosaur Stomach Stone Gastrolith Rock Gizzard Stone COA Turtle about 80 million to 78Location: Cloverly Formation, Montana Weight: 2. 3 Ounces Dimensions: 2. 1 Inches Long, 1. 9 Inches Wide, 0. 8 Inches Thick Comes with a Certificate of Authenticity. The item pictured is the one you will receive. Gastrolith stones identified in the Cloverly Formation are actually polished stomach stones from large dinosaurs, particularly Sauropods such as Titanosaurs. These beautiful, rare stones, called gastroliths, are found in only a few locations
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