Paperback | JUVENILE FICTION/Classics | Little Critter’s class is going to the Critterville Museum of Natural History and everyone is excited. When he finds out the dinosaur exhibit is closed because of a missing Triceratop’s bone, he sets out on an exciting journey through the museum. He searches the Hall of Minerals, climbs the trees in the rainforest and sneaks around the Planetarium- all to solve the mystery of the lost dinosaur bone.