Excavate a T. Rex skeleton 657550 from inside a 3D T. Rex fossil replica. The T. Rex lies before you as a 3D fossil, almost as if it had died just moments ago. Like a paleontologist, you must dig through the soft layers of plaster to expose the fossilized bones. Assemble the skeleton model, and the prehistoric giant rises again. The kit includes 12 skeleton pieces buried in a plaster block, excavation tools, and a descriptive manual.