If you know a young reader that loves dinosaurs and time travelling adventures, then this is an excellent book to choose. That being said, this is the second book in the Data Set series. If you have not read the first book, which I had not before reading this book, the reader will most likely be confused in the beginning. There is not an introduction explaining who Dr. Bunsen or the children are and it seems as though the reader comes in during the middle of an adventure; which means that the reader must play catch up and determine who people are and what is going on. As a book in a series, if read consecutively, this is a great book for dino-loving young readers. As a standalone book, there is a lot of information that must be grasped very quickly.