Dinosaur Gastrolith - 2.485" Gut Stone - 150,000,000 Years Old tunguska 544" and dates to around

544" and dates to around 77 million years ago

This specimen is a fossil denticle from a stingray

Within days

the chart to the left highlights the "Big Five" events as well as a number of smaller events that have occurred in between: Ordovician–Silurian(441

Dinosaur Gastrolith - 2.485" Gut Stone - 150,000,000 Years Old tunguska 544" and dates to aroundWithout proper digestive systems, many dinosaurs would ingest stones to aid the breakdown of food in their gut. Known scientifically as gastroliths, the dinosaurs would eventually pass these stones, which would then become fossilized. This specimen is a 2. 485" dinosaur gastrolith from the Morrison Formation in Colorado. It ships in a protective carton, ready for display right out of the box. A specimen card that doubles as a certificate of