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Complete left lower jaw from the Late Cretaceous of Alberta
Trilobites range in length from one millimeter to 72 cm (1/25 inch to 28 inches)
The original for this specimen was valued at $1
The Wyoming County Petroglyph
Aragonite Crystals Pachycephalosaurus Complete left lower jaw fromNOTE THAT YOU WILL RECEIVE A SPECIMEN OF EQUAL OR BETTER QUALITY THAN THE ONE SHOWN Aragonite is a carbonate mineral, one of the two common, naturally occurring polymorphs of calcium carbonate, CaCO3. The other polymorph is the mineral calcite. Aragonite's crystal lattice differs from that of calcite, resulting in a different crystal shape, an orthorhombic system with acicular crystals. Repeated twinning results in pseudo hexagonal forms. Aragonite
US$ 5997.50
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