Sharks continuously regenerate teeth in rows throughout their lives; a single shark is estimated to produce and shed tens of thousands of teeth over its lifetime (commonly cited estimates run to around 30,000 or more), since a new row moves forward to replace lost ones every 1-2 weeks in many species. This makes shed shark teeth among the most common vertebrate fossils found on Earth.
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Sharks continuously regenerate teeth in rows throughout their lives; a single shark is estimated to produce and shed tens of thousands of teeth over its lifetime (commonly cited estimates run to around 30,000 or more), since a new row moves forward to replace lost ones every 1-2 weeks in many species. This makes shed shark teeth among the most common vertebrate fossils found on Earth.
The estimated total number of teeth produced and shed over the lifetime of an individual shark due to continuous tooth replacement (polyphyodonty), as calculated from replacement-rate studies.
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Permanent ID limitsregistry.com/limits/LR-MOST-TEETH-PRODUCED-SHARK-LIFETIME
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Limits Registry. LR-MOST-TEETH-PRODUCED-SHARK-LIFETIME. Most teeth produced by a single shark over its lifetime. 2026.