1.3" Sauropod Dinosaur Stomach Stone Gastrolith Rock Gizzard Stone COA Knightia research suggests that rapid sea-level

research suggests that rapid sea-level changes and a sudden drop in atmospheric carbon dioxide disrupted reef ecosystems

make Fossil Lake the premier Paleogene record of a freshwater lake ecosystem

Diplodocus was a very large

The echinoid designation derives from Latin terminology evoking the creature's distinctive form

1.3" Sauropod Dinosaur Stomach Stone Gastrolith Rock Gizzard Stone COA Knightia research suggests that rapid sea-levelLocation: 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