Gregory S. Paul is a renowned dinosaur researcher and illustrator who helped establish the "new look" of the Mesozoic creatures seen in contemporary movies and documentaries. He is credited for his primary design work on the Tyrannosaurus in Jurassic Park. His books include The Princeton Field Guide to Dinosaurs, The Princeton Field Guide to Predatory Dinosaurs, and The Princeton Field Guide to Mesozoic Sea Reptiles (all Princeton). His work has appeared in leading publications such as National Geographic, Scientific American, Nature, and The New York Times.