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The mineral itself is a crystalline form of calcium carbonate
The semispherical
Over 70 million years ago
Natural root connection
Mosasaurus was a formidable predator in ancient oceans
Globidens fossil tooth in Matrix, mosasaur species (1.00") ammolite gem The mineral itself is aGlobidens tooth with root nicely displayed on matrix. Globidens got its name from the fact that its teeth were spherical, unlike those of other mosasaurs. The majority of mosasaurs have teeth that they had developed to grasp soft, slippery prey like fish and squid; some later species changed their teeth to also rip flesh. No other mosasaur was as skilled at destroying armored prey as Globidens, despite the fact that several others could break ammonite
