Georgia designated the shark tooth as the official state fossil in 1976. A fairly common fossil on the Georgia coastal plain, the fossilized shark tooth is prized by collectors. These prehistoric shark teeth are found in a range of colors - most common are black or gray, less common are the white, brown, blue, and reddish-brown teeth.
Many types of sharks lived in prehistoric Georgia - the oldest teeth date back about 375 million years. One of the largest extinct species of shark tooth was Otodontidae Carcharocles megalodon (whose fossilized teeth are pictured here).
Prehistoric fossil shark tooth (megalodon - Otodontidae family) - photo © William Tanneberger on Flickr (all rights reserved; used by permission). See All State Fossils & Dinosaurs.