Tyrannosaurus Rex Dinosaur X-Ray Fun 35 piece model is easy to assemble and a great way to engage young science students in the anatomy of this beautiful pre-historic creature. Fun and educational, this kit allows kids to build and learn. This model features a transparent side to show internal organs and structures that will fascinate kids who are studying dinosaurs. Measuring approximately 7 inches long and 5 inches tall the X-Ray Fun Kit makes a great resource for hands-on vision learning to help children understand the anatomy of a T-Rex. Recommended for ages 6 and up this kit makes a great introduction to understanding dissection of living organisms and how paleontologists recreate the pre-historic reptile's body. The T Rex is one of the most popular dinos from the Cretaceous period and every child recognizes this giant carnivore who is known as the King of the Dinosaurs!