Buffy Silverman 
Can You Tell a Tyrannosaurus from an Allosaurus? 

A huge dinosaur stomps around on two legs. It hunts with sharp teeth and claws. Its head is large, but its arms are tiny. Was that a Tyrannosaurus? Or was it an Allosaurus? These dinosaurs looked similar, but they were very different. Read this book to become an expert at telling these look-alikes apart!