STEGOSAURS

With charming color illustrations, 11 dinosaurs of the stegosaur family, including recent fossil finds on four continents. Fans of the gentle plant-eating stegosaurus, with its double row of bony plates (``Solar-Powered'' refers to speculation that these may have been used to collect or dissipate heat) will relish other odd- looking members of the clan. A world map gives fossil locations; a helpful bar graph provides a species timeline. Unfortunately, drawings are not always to scale: a 25-foot adult is shown with an egg one fifth its size. Still, this will find a wide audience: visual enough for the picture book set, it also includes enough factual material for older readers. Further reading; index. (Nonfiction. 7-12)