Sixgill Shark Tooth
Hexanchus species

A comb-shaped tooth with a row of descending cusps like a saw blade, from a deepwater shark.
- Typical size
- 0.5–1.5 in
- How often it turns up
- Rare
- Collecting
- Check local rules
- Handling
- Sharp edges
Beach-found teeth above the waterline are generally fine to keep. Digging in rivers, on state land, or on submerged bottoms needs a Florida fossil permit.
How to tell it apart
- Row of stepped cusps decreasing in size
- Rectangular overall outline
- Rare, usually fossil
Found one?
Photograph it and BeachNut will rank the likely matches, then log it to your collection.
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