Shark Tooth Fossils Found in Florida

Shark teeth are a fossil that has fascinated man for as long as man has been around. In a city just outside of Jerusalem, scientists uncovered a collection of fossilized shark teeth dating back to the Late Cretaceous.

Sharks don’t need to worry about cavities like we do, because their baby teeth are naturally covered in fluoride. They also lose an average of a tooth a week, but unlike humans, each tooth is replaced within a day.

While many of us are familiar with the infamously vicious Bull Shark, the shark teeth found in Florida were most likely collected from a variety of species that include the Great Hammerhead Shark (Sphyrna Mokarran), Callopyed Hammerhead Shark (Sphyrna lewini), Sandbar Shark (Carcharhinus plubeaus), Spinner Shark (Carcharhinus Brevpinna), and Black Tip Shark (Carfharhinus Limbatus).

Using a variety of tooth morphology tests and comparisons to modern sharks, we have determined that all observed carcharhiniform sharks, with the exception of Hemipristis, have orthodont tooth histology. This suggests that orthodont teeth may be a generic trait within the order Carcharhiniformes, and that the heterogeneity seen among Hemipristis specimens is related to morphologically similar changes to other modern sharks that have evolved orthodont teeth.

Although the occurrence of shark teeth in children is not unusual, they should be evaluated if they fail to erupt normally and/or if they are displaced from surrounding permanent teeth. Early space loss can result in crowding of adult teeth and can create a negative impact on oral function and aesthetics.  Shark tooth