Mastodon Tooth
Mammut americanum
Markings and exact colorations may vary.
A heavy, cone-cusped grinding tooth from an Ice Age browser, one of Florida's headline fossil finds.
- Typical size
- 3–8 in
- How often it turns up
- Rare
- Collecting
- Archaeological, leave in place
- Handling
- Safe to handle
Vertebrate fossils collected from state-owned land or submerged bottoms in Florida require a fossil permit from the Florida Museum of Natural History. Beach-washed finds above the waterline are generally fine, but know your site.
How to tell it apart
- Rows of blunt conical cusps
- Very heavy, dark brown to black enamel
- Often river-worn and rounded
Where to find these in Florida
Beaches rated very good or excellent for fossils. Each page shows today’s score, the best window and access details.
- Caspersen Beach · Venice
- Englewood Beach (Chadwick Park) · Englewood
- Stump Pass Beach State Park · Englewood
- Turner Beach · Captiva
- Turtle Beach · Siesta Key
Found one?
Photograph it and BeachNut ranks the likely matches with a confidence read, then logs it to your collection with the beach and date.
Browsing beaches and the full field guide is free. A free account logs unlimited finds and gives you three photo identifications a day.
More fossils in the field guide
Get Florida beachcombing tips
Occasional emails: what's washing up, shelling tips and new BeachNut features. No spam, unsubscribe any time.











