IG UP DINOSAURS: Spark an interest in paleontology with this Fossil Skeleton Excavation Kit! Dig up the bones of a T-Rex & assemble them like 3D puzzles to create lifelike model skeletons! EXCA ... VATION TOOLS: Chip away at the excavation kit’s plaster rock to reveal replica bones from a 15-piece T-Rex. The provided tool kit has a hammer, chisel & brush.