Scale cube=1cm: Full sizing please see photo

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity!

Specimen: Gastrolith Stomach Stone

Age: Morrson Formation, Jurassic

Location: Colorado, USA

This Gastrolith is from a Dinosaurs gastrointestinal tract. These stones are retained in the muscular gizzard and were used to grind food in animals who lacked suitable grinding teeth.

Such stones are identified by ensuring all three of the following are true: Firstly, the stone is unlike the rock found in its geological vicinity; Secondly, the stones are both rounded and polished as they turned and rolled inside the dinosaur; and Thirdly, the stones were found with the fossils of the dinosaur which ingested it. This provides enough evidence to clarify that these are genuine stomach stones.

ACTUAL AS SEEN: The image shows the EXACT unique specimen you will receive. Measurements are as accurate as possible, though be aware measuring precise dimensions can be difficult from irregular shaped items. Whilst we portray colours as close to life-like as we can, colours will vary if taken in sunlight, indoors, from monitor to monitor and device to device. The scale cube in the photo is 1cm to give a visual size.

Origin : USA.

Era : jurassic.

Unique : (Actual as seen)