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These Lamna obliqua Shark's Tooth from the Eocene Epoch are 37.5 to 54 million years old.
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Each piece of Kyanite is similar to the ones pictured. Kyanite is a polymorph with two other minerals; andalusite and sillimanite.
These Lamna obliqua Shark's Tooth from the Eocene Epoch are 37.5 to 54 million years old.
Each piece of Kyanite is similar to the ones pictured. Kyanite is a polymorph with two other minerals; andalusite and sillimanite.
