1.9" Sauropod Dinosaur Stomach Stone Gastrolith Rock Gizzard Stone 2.3 OZ COA

Description

1.9" Sauropod Dinosaur Stomach Stone Gastrolith Rock Gizzard Stone 2.3 OZ COA
1.9" Sauropod Dinosaur Stomach Stone Gastrolith Rock Gizzard Stone 2.3 OZ COA
Location: Cloverly Formation, Montana
Weight: 2.3 Ounces
Dimensions: 1.9 Inches Long 1.6 Inches Wide 1.1 Inches Thick
Comes with a Certificate of Authenticity.
The item pictured is the one you will receive.
This is a real Gastrolith, not a replica
Gastrolith
Polished stone was found in the Cloverly Formation are actually Polished stomach stones from large dinosaurs!  They are very beautiful and come from Sauropod Dinosaurs like Titanosaurs.  They are also called Gastroliths. Found only in a few locations in Southern Montana.
Geologists usually require more than a few pieces of evidence before they will accept that a dinosaur to aid its digestion used a rock. First, the stone must be unlike the rock established in its geological vicinity. Secondly, it should be rounded and polished, because inside a dinosaur's gizzard other stones and fibrous materials in a process similar to the action of a rock tumbler would have acted upon any genuine gastrolith. Lastly, the stone must be found with the bones of the dinosaur, which ingested it. It is this last criterion that causes trouble in the identification, as smooth stones found without context can be dismissed as having been polished by water or the wind.
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