Megalodon Tooth (Fossilized Shark Tooth)
Kingdom: Animalia; Phylum: Chordata; Class: Chondrichthyes; Order: Lamniformes; Family: Otodontidae; Genus: Otodus; Species: O. megalodon · Otodontidae (Megatoothed Sharks) · Fossilized Vertebrate Tooth (Chondrichthyes). This is a heart-shaped shark tooth, not a mollusk shell.

Species
Otodus megalodon
Shell Type
Fossilized Vertebrate Tooth (Chondrichthyes). This is a heart-shaped shark tooth, not a mollusk shell.
Family
Otodontidae (Megatoothed Sharks)
Size
Approximately 2-2.5 inches in height. This is a small to medium specimen; adults could reach teeth sizes over 7 inches.
Color & Pattern
Dark charcoal gray to dull brownish-gray coloration. The color is derived from mineralization during the fossilization process. No enamel shine is visible; it appears heavily water-worn and leached.
Rarity
Common to Uncommon. While Megalodon teeth are frequently found in certain regions, specimens in this worn, heavily tumbled condition are a common beach find.
Habitat
The living animal was pelagic (open ocean), but fossilized teeth are typically found in Miocene and Pliocene marine sediment layers or on beaches where those sediments erode.
Geographic Range
Found worldwide in temperate and warm waters. Common sites include the Atlantic Coast of the USA (Florida, Carolinas) and the phosphorus mines of Morocco.
Description
This is a fossilized shark tooth characterized by a broad, thick root and a triangular blade. It was the largest shark to ever live. This specific specimen has been significantly smoothed and rounded by the action of sand and surf, losing its serrated edges and sharp point.
Key Features
Triangular shape, thick root mass at the top (the 'shoulders'), and a distinct dental band or bourrelet (though worn here). The heaviness compared to modern bone indicates mineralization.
Collector Value
Lower collector value (approximately $10–$25) due to the heavy erosion and lack of serrations. Well-preserved 'Gem' quality teeth of this size can fetch much higher prices.
Condition Notes
Poor to Fair condition for a collector. The enamel is mostly lost, the serrations are absent, and the tip is blunted. It is a 'beach-worn' fossil, valuable as a curiosity rather than a high-end specimen.
Interesting Facts
The Megalodon could grow up to 50-60 feet long. Their teeth are the only parts that fossilize well because their skeletons were made of cartilage, which decays quickly compared to the mineralized teeth.
Ecological Role
Apex predator. Megalodon occupied the top of the marine food chain for millions of years, preying on small-to-medium sized whales and large fish.
Similar Species
Carcharocles chubutensis (similar but with different side cusps) or large Great White Shark (Carcharodon carcharias) fossils, which are thinner and have different root structures.
Beach Finding Tips
Look in 'shell lines' or gravel patches at low tide, especially after a storm. Focus on beaches known for fossil deposits like Venice Beach, Florida, or Calvert Cliffs, Maryland.