The Magic School Bus in the Time of the Dinosaurs By Joanna Cole Illustrated by Bruce Degen Scholastic Inc | ISBN 9780590446891 Paperback48 Pages | 8.38" x 10" | Ages 4 to 8 The Magic School Bus travels back in time, and Ms, Frizzle and her class run into a Tyrannosaurus Rex, a sandstorm, and possibly even their own extinction!