A fossilized shark tooth is commonly referred to as a shark tooth fossil or simply a shark tooth. Shark teeth are one of the most commonly found and well-preserved types of fossils. They are composed of calcium phosphate, which makes them resistant to decay and enables their preservation in the fossil record. Shark teeth can be found in various sizes and shapes, depending on the species of shark. These fossils provide valuable information about the ancient diversity of sharks, their evolution, and their past distributions. Additionally, shark teeth are popular among fossil collectors due to their durability, distinct shapes, and the intriguing glimpse they offer into the ancient marine world.