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Dimensions: 10 x 9
Homo sapiens
Sharks arose in the Devonian Age some 400 million years ago
bony crest was as bigger than the rest of its skull and may have been used to produce a low-frequency
Megalodon Tooth Progression With 8, 6 Inch Teeth Spinosaurus Dimensions: 10 x 9This replica Megalodon tooth progression shows 2 sets of 4 rows of 6 inch teeth. The teeth are cast from real teeth. The jaw section is our reconstruction of a jaw section because jaws are rarely preserved because they are cartilage that seldom fossilized. Megalodon had 46 front row teeth, 24 in the upper jaw and 22 in the lower jaw. Most sharks had at least six rows of teeth, so a Megalodon would have had about 276 teeth in its mouth at any given