Squatina subserrata

Squatina subserrata is the       angel shark species currently used for        teeth  from the Pungo River formation. Squatina teeth are extremely hard       to seperate into species. Most fossil species are defined by geologic age and        not by differences in the teeth. Modern species are often differentiated by color       patterns, dorsal spines, barbels or other minor external variations. The teeth are       similar in both jaws and vary only slightly with jaw position.