Includes both left and right gastroliths for a complete specimen
Two size options (small 1-2.5 cm, large 2-4.5 cm) for variety
Ships with a glass-topped ricker case for small size or in a sturdy carton for large size
Comes with a small information card detailing the specimen
Authentic Jurassic period fossil from the Morrison Formation in Colorado
Also known as gut or gizzard stones, gastroliths are common digestive aids among amphibians, reptiles, birds, and dinosaurs. their primary function is to help grind food matter.
In dinosaurs, gastroliths are usually associated with sauropods, though they have also been discovered in ornithomimids, oviraptors, and some ornithischians. Thi
Fossil Type
Gastrolith (gut or gizzard stone)
Geological Era
Jurassic
Origin
Morrison Formation, Colorado
Small Size Range
1-2.5 cm (left), 2-4.5 cm (right)
Large Size Range
2-4 cm (left), 5-10 cm (right)
Presentation
Small in glass-topped ricker case, large in carton