1.3" Sauropod Dinosaur Stomach Stone Gastrolith Rock Gizzard Stone COA titanothere Location: Willwood Formation

Location: Willwood Formation

The discovery of their huge skulls and teeth often led early explorers to believe they were uncovering the remains of dragons

smaller predators such as Troodon likely preyed on hatchlings and juveniles

One notable site is the Withlacoochee River region

This ancient whale was enormous—about 70 feet long and weighing close to 15 tons

1.3" Sauropod Dinosaur Stomach Stone Gastrolith Rock Gizzard Stone COA titanothere Location: Willwood FormationLocation: Cloverly Formation, Montana Weight: 0. 8 Ounces Dimensions: 1. 3 Inches Long, 1. 2 Inches Wide, 0. 7 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