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crystalline complexity
and ecological complexity of crocodilians in the Hell Creek Formation
This unique hue is not inherent to calcite but is the direct result of trace amounts of cobalt substituting for calcium within its crystalline structure
In addition to ornamental uses
covered the neck and likely served more for display or species recognition than for defense
2.8" Mosasaur Fossil Vertebrae Cretaceous Dinosaur Era Pierre Shale South Dakota Hyracodon Nebrascensis crystalline complexityLocation: Pierre Shale, Pennington County, South Dakota Weight: 9 Ounces Dimensions: 2. 8 Inches Long, 2. 4 Inches Wide, 2. 2 Inches Thick The item pictured is the one you will receive. 100 66 Million Years old, Upper Cretaceous, Maastrichtian Epoch. Name: Mosasaurus Named By: Dollo 1889. Diet: Carnivore. Size: Depending on the species, Mosasaurs could range from 6 to just under 14 meters in length. Known locations: Fossil locations suggest a