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The large adult fossils are found almost exclusively in the 18-inch layer
but some have been found in mid-lake beds
Large heart approx
Chemical Composition: Iron 89%
The coloration of agates is due to other minerals present in the silica
Huge Mosasaur Tooth in Matrix glass The large adult fossils areFantastic specimen for any collector! Mosasaur tooth approx. 2. 25" long x 1. 5" wide. Matrix approx. 4" x 3. 25" About 80 million years ago, there were large creatures that lived in the ocean called Mosasaurs. These "marine lizards" were powerful swimmers; air breathing predators that once dominated the seas. Mosasaurs are considered one of the Great Marine Reptiles that ruled the oceans during the Cretaceous period. Luckily for us, all Great Marine
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