What is a fossil? Sometimes it's the imText of an ancient leaf in a rock. Or it could be the skeleton of a dinosaur that has turned to stone! With clear prose and lovely, full-color illustrations, award-winning author and illustrator Aliki describes the different ways fossils are formed and what they tell us about life on Earth long ago. This book also includes an activity guide so kids can create their own fossils for someone to find a million years from now. This is a Stage 2 Let's-Read-and-Find-Out, which means the book explores more challenging concepts for children in the primary grades.