Professor Chuck Ciampaglio of Wright State University-Lake Campus was recruited as a consultant for a design team from California to build a shark jaw for a National Geographic special on Prehistoric Predators. Matt Overman, right, one of the students who assisted with the project, works on the jaw as Ciampaglio oversees. The other assistant was Bob Holthaus. The special airs at 10 p.m. Tuesday on the National Geographic channel.