Cretodus

Cretodus is an extinct genus of Mackerel sharks that lived during the late Cretaceous period. This shark is known only from fossilized teeth and vertebrae that have been found in Africa, Europe, and North America. The length of the teeth (from the tip of the crown to the tip of the root) is about 2 inches (5 cm). Cretodus was named by Sokolov in 19...
Found on http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
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