1.3" Sauropod Dinosaur Stomach Stone Gastrolith Rock Gizzard Stone COA Nanotyrannus known as "brimstone

known as "brimstone

Ursus spelaeus

a result of trace amounts of iron and other elements incorporated during formation

and impurities during crystallization

1.3" Sauropod Dinosaur Stomach Stone Gastrolith Rock Gizzard Stone COA Nanotyrannus known as "brimstoneLocation: Cloverly Formation, Montana Weight: 0. 9 Ounces Dimensions: 1. 3 Inches Long, 1. 2 Inches Wide, 0. 9 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