Newly discovered mega-tooth could belong to one of the biggest dinosaurs ever

Newly discovered mega-tooth could belong to one of the biggest dinosaurs ever:

A tooth recently discovered in Argentina is an incredible 75 millimeters, or nearly 3 inches long. What's more, the tooth belonged to a member of the titanosaurs, a group of gigantic sauropods similar to brachiosaurus and apatosaurus. And it might just be the biggest of the bunch. More »




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