Gr 3-6-Each of these titles covers a group of prehistoric creatures, with particular emphasis on one representative dinosaur. Opening with a brief scene in the present tense to introduce the creature and its world, the books then move into straightforward information about the animal and its relatives. In Stegosaurus, for example, only two other stegosaurs (Huayangosaurus and Kentrosaurus) are mentioned within the main narrative. However, full-page, full-color paintings introduce several other related species, along with captions and fact boxes that state where and when the creatures lived, but not necessarily their sizes. The texts are enthusiastic, with enough information to engage readers without overwhelming them. In each book, an appended two-page "family tree" gives a general look at classification. These titles work as effective, simple introductions to prehistoric animal groups.-Steven Engelfried, Beaverton City Library, OR Copyright 2004 Reed Business Information.