Tracking Tyrannosaurs (National Geographic Kids) by Christopher Sloan, illustrated by Xing Lida and Liu Yi Ages 8-12 48 pages National Geographic September 2013 Hardcover     There is more to the T. rex than we thought! This in-depth book (written by three experts in the field) contains new information about the dinosaur’s family and their link to birds. A six-page introduction to the dinosaur includes updated information about the Tyrannosaurs family tree and the dinosaurs’ early features. Early tyrannosauroids were small to medium size, and their front teeth had a ridge along the back. A close-up photograph showing a model of the dinosaur’s powerful bone-crunching bite will appeal to readers who like to see sharp teeth and long claws. Interesting facts stand out in brightly colored text. The latest sensation is a feathered giant found in China that some are calling a woolly tyrannosaur! Tyrannofacts, graphs, maps and labeled drawings appear in sidebars throughout the three chapters. Chapter two focuses on dig sites found in Europe, Asia and North America and details of early tyrannosauroids such as the Guanlong, the Dilong, the Albertosaurus and the Alioramus. Pronunciation guides are included in these sections, and it’s here children can learn when and where the dinosaurs lived and how they compare to the T. rex in size (meters and feet), appearance and disposition. To learn more about the paleontologists who discovered or studied the dinosaurs, children can refer to the Tyrannosaur Tracker section that appears along the right-hand side of the page. Chapter three, Revealing Tyrannosaur Secrets, tries to answer questions about dinosaur bones and how fast a T. rex could run by using tools such as CT scans, computer modeling and technology from microbiology and genetics laboratories. Back material consists of a thirty-two word glossary, an index, and a resource list of books and websites. This would be a useful book for a school project, and a must have for a library that needs up-to-date information on one of children’s favorite dinosaurs.     web reviews   Tanya Boudreau/2013 for curled up with a good kid's book   For grown-up fiction, nonfiction and speculative fiction book reviews, visit our sister site Curled Up With a Good Book (www.curledup.com)