This book is part of a book series called I Can Read-Level 2 .

This book has been graded for interest at 4-8 years.

There are 32 pages in this book. This book was published 2007 by HarperCollins Publishers .

Paleontologist Charlotte Lewis Brown writes about science for children and adults. Dr. Brown lives in Seattle, Washington. Artist Phil Wilson specializes in depicting prehistoric life and consults with leading researchers. He lives in Pittsburgh, Pennsylvania.