The Crow Shark, Squalicorax pristodontus is an extinct species of shark once common when New Jersey was under water during the Cretaceous Period. They had serrated teeth, similar to modern Tiger Sharks suggesting they may have been turtle eaters. One thing is for sure. they were also scavengers as evidenced by a tooth found embedded in a Dinosaur bone. They were a medium sized shark growing to about 15 feet in length. Their teeth are the most common fossil found, and are relatively common in exposed ares of the Navesink Formation throughout Monmouth County.