Dinosaur World: The Adventures of The Prehistoricans

This book is in a short-book adventure series almost like a t-v series. It is about 6 children who gain pet dinosaurs from a secret lab and gain Dinosaur DNA which allows them to turn into dinosaurs. These abilities help them fight off the evil Trayne Tyrannosaurus who wants to take over Earth and Prehistorica, the world where dinosaurs still exist.