Fossilized shark tooth of a Cretalamna.

A fossilized shark tooth of a Cretalamna sp. from the Aquia Formation in Liverpool Point, Charles County, Maryland, USA. While possibly an ancestor of Otodus, the species Cretalamna appendiculata is often used as a wastebasket taxon. #FossilFriday

#shark #fossil #paleontology #cretalamna #otodus