A 2007 encyclopedia on dinosaurs created by the combined might of paleontologist Dr. Thomas R. Holtz, Jr. and famed paleoartist Luis Rey. Unlike your average dino-book, this one doesn't merely cover the most well known genera and calls it a day -- the author instead divided it into 42 chapters, each revolving around a major theme, like geology, fossilization, the Mesozoic periods, but the bulk of the written material is dedicated to thoroughly detailing each of the branches on the dinosaur family tree. True to the title, this means birds get a chapter of their own, while pterosaurs and marine reptiles don't.