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Brazil calcite and quartz
Perchoerus - peccary
Illinois
Dinosaur Eggshell
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Ginglymostoma moroccanum
Media

Many of the bivalves from South Dakota will fluoresce due to the replacement of the shell by calcite and chalcedony. The calcite will fluoresce from white to yellow to orange. The chalcedony usually shows up as a green fluorescence. Usually the stronger fluorescence is under long wave and is the first photo shown in the fluorescents (South Dakota) section of the web site. Chalcedony usually does not fluoresce well under long wave, but does fairly well for the fossils from this area.

Check out other South Dakota fluorescent offerings under the Fluorescents section. Then click on the "To view specimen material from South Dakota" link. Some other normal light photos will be shown there as well.

The bivalve specimen is a clam species. Specimen is from the Upper Cretaceous (100-70 MYA).

This specimen is also available in the fluorescent section under South Dakota fluorescent minerals and fossils. It will have the same item number without the "N" at the end of the number.

Bivalve-clam
 
Bivalve-clam Quantity in Basket: None
Code: SDBV-102N
Price: $5.00
Shipping Weight: 0.08 pounds
 
 
Quantity:
 
Time: Upper Cretaceous, approximately 100-70 million years ago.
Location: Pierre Shale, South Dakota, USA
Dimensions: 1-1/8" x 1" x 5/8"



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