Juan Benito is a vertebrate paleontologist and postdoctoral research associate at the University of Cambridge. Roc Olivé holds a degree in fine arts from the University of Barcelona and specializes in paleoart. He is the illustrator of several books on prehistoric fauna. Luis Chiappe is senior vice president of research and collections and director and curator of the Dinosaur Institute at the Natural History Museum of Los Angeles County.
""Pictorially the book is a paradigm of sensory pleasure. To turn the pages to see ancient species for the first time is an exercise in wonder and delight, and everyone from novice birder to proficient ornithologist will be thrilled. . . . Juan Benito and Roc Olivé deserve our gratitude for this bold step forward.""---David Gascoigne, Travels with Birds