The Mollusk Hiding Rare Minerals in its Teeth

Chitons are marine creatures with unique teeth made of biominerals like magnetite, making them the hardest known in living organisms. Their radula, similar to human teeth, consists of a flexible stylus and a hard cusp. Some chitons, like the gumboot chiton, incorporate rare minerals such as santabarbaraite into their structure. Chiton teeth undergo a regeneration process involving mineralization, turning from transparent to black as they harden. These adaptations highlight the evolutionary capabilities of chitons in their rock-grazing niche.

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