Dr. Peter Dodson is a professor of anatomy at the University of Pennsylvania. He is also the vice president and head of the book review committee of The Dinosaur Society. Dr. Dodson has written two other dinosaur books for kids- Giant Dinosaurs and Baby Dinosaurs, both published in 1990 by Scholastic Inc. He was the editor of the 1990 book, The Dinosauria, one of the best books ever written on the subject. He discovered Avaceratops, the smallest cousin of Triceratops, on a dig in Montana in 1986. Dr. Dodson currently lives with his family in Philadelphia. Wayne D. Barlowe's love of art, nature, and the natural world comes from his parents. They are both longtime artists and have illustrated many natural-history guides. When he began his art education at the Cooper Union, he also began an apprenticeship at the American Museum of Natural History in New York City. As a professional, he has painted over 300 covers for science-fiction books. His first book, Barlowe's Guide to Extraterrestrials, was published by Workman Publishing in 1979. It is a natural-history guide to some of the most famous aliens in science fiction. A second book, Expedition, focuses on the strange animal life found on an alien world. It was published in 1990 by Workman. Barlowe currently lives in New Jersey with his wife and two daughters. Michael Meaker has been a staff illustrator for the Natural History Museum of Los Angeles since graduating from art school in 1988. He was the primary illustrator for the book Sharks: Fact and Fantasy, published by the Natural History Museum of Los Angeles. He contributed several paintings to The Ultimate Dinosaur, published in 1992 by Bantam Books. He has also illustrated a book and an exhibit on whales for the Natural History Museum of Los Angeles, and has done illustrations for several exhibits at the Los Angeles Zoo. Meaker currently lives in South Pasadena and is hard at work on several new dinosaur projects.