Pim, Keiron: - As a small boy in the early 1980s nothing seemed more exciting to Keiron Pim than a visit to London's renowned Natural History Museum, where he would gaze up at the Diplodocus skeleton and later depart clutching some little dinosaur-related memento: an eraser shaped like Stegosaurus, a lurid poster of a Jurassic scene, or a book crammed with dino-facts. It would have blown his four-year-old mind to know that thirty years later a book on dinosaurs would be his first publication. Keiron, married with three young daughters, is a writer and journalist now based in Norfolk, England.

Horner, Jack: - John "Jack" Horner is one of the world's foremost paleontologists, credited with finding the first dinosaur eggs in the Western Hemisphere, the first evidence of dinosaur colonial nesting, the first evidence of parental care among dinosaurs, and the first dinosaur embryos. He served as the inspiration for Paleontologist Dr. Alan Grant in Michael Crichton's Jurassic Park, and as the technical advisor on all of the Jurassic Park films. Horner is Curator of Paleontology at the Museum of the Rockies in Bozeman, Montana, and Regents Professor of Paleontology at Montana State University.