7.8" Polished Dinosaur Bone (Gembone) Vertebra Section

This is a 7.8" wide section of dinosaur bone from the Morrison Formation of either Utah or Colorado. One side has been cut flat and polished to a glossy finish which allows for the beautiful internal cell structure to be seen.

It is accompanied by an acrylic/metal display stand to assist with presentation.

Agatized or agate replaced 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.

FOR SALE
$275
DETAILS
SPECIES
Unidentified
LOCATION
Utah or Colorado
FORMATION
Morrison Formation
SIZE
7.8 x 7.3 x 3.1"
CATEGORY
SUB CATEGORY
ITEM
#227398
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