the magic school bus; in the time of the dinosaurs, paperback book

One twist of the dial and the Magic School Bus transforms into a time machine that travels back to the prehistoric age, making pit stops in the Mesozoic Era and meeting dinosaurs along the way.

"It's fun and fine science".--The New York Times Book Review. 

Includes perforated bookmark which teases to The Magic School Bus: Inside a Hurricane, coming in Fall 1995.