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| 1 inch Scapanorynchus texanus, Goblin Shark, fossil shark tooth from Booneville, Mississippi. 11 Mile Creek - Cretaceous Period |
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| 3/16 inch Ricarddestasia gilmorei fossil shark tooth from Harding County, South Dakota. Hell Creek Formation - Cretaceous Period |
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| 1/4 inch Ricarddestasia gilmorei fossil shark tooth from Harding County, South Dakota. Hell Creek Formation - Cretaceous Period |
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