Opalized Dinosaur Tooth

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Photo: Carl Bento/Australian Museum Surely you’ve seen fossils in museums, but what about this: opalized dinosaur tooth. Opalized fossils occur when silica settled into cracks in the dinosaur bone and then hardened into opal. This one above is a particularly fantastic specimen: an opalized theropod dinosaur tooth from the Australian Museum.

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Opalized Dinosaur Tooth

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