Download or read book Dinosaur Discoveries (New & Updated) written by Gail Gibbons and published by Holiday House. This book was released on 2018-06-12 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here are the most recent theories about the history of dinosaurs, backed up with amazing facts about dinosaur discoveries. Gibbons discusses the Triassic, Jurassic, and Cretaccous periods and many of the non-bird dinosaurs that lived during each of those times.