Agatized Dino Bone For Bill Magee

40 small pieces between 1-3" wide. 4 large pieces up to 6 inches wide. About 14 lbs in total


This is a chunk of Jurassic aged, agatized dinosaur bone from the Morrison Formation. You can clearly see the preserved cell structure. It may have come from any of the dinosaurs found in the Morrison Formation including Allosaurus, Apatosaurus, Brachiosaurus, Camarasaurus, Diplodocus, Stegosaurus, and Torvosaurus.

It comes from one of our partner's private quarries outside of Dinosaur, Colorado. While complete or even near complete bones are uncommon finds, broken and tumbled fragments of bone are very common in many layers of the Morrison Formation.

Agatized dinosaur bone is a rare form of fossilized dinosaur bone where the original fossilized bone (typically permineralized with calcite) has been re-mineralized (replaced/substituted) with silica-type compounds (agate, jasper, chalcedony, or opal). In a unique and isolated circumstance, the strata on the Colorado Plateau were uplifted during the tertiary intrusions, about 35,000,000 years ago, when the San Rafael Swell and the La Sals, Henry, and Abajo Mountains were formed. As these ranges were forming, local strata layers were flooded with silica-rich, superheated groundwater. This provided the appropriate environment to begin the replacement of the calcite in the original fossils with silicates. The most prolific layers of gem bone come from the Morrison Formation which is late Jurassic in age.
DETAILS
SPECIES
Unknown
LOCATION
Quarry near Dinosaur, Colorado
FORMATION
Morrison Formation
SIZE
1-3" wide
CATEGORY
SUB CATEGORY
ITEM
#36540
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