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
Restricted

Florida treats this as a vertebrate fossil: collecting one on state-owned land or water — including river bottoms and beaches below the high-tide line — needs a Florida Museum fossil permit. State parks and national seashores don't allow fossil collecting at all. If unsure, photograph it and leave it.

Handling
Safe to handle

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.

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

Browse every fossils in the guide

Get the weekend beach score by email

Before each weekend: which Florida beaches score best for finds. No spam, unsubscribe any time.