Geoworld Sea Monsters Mosasaurus Skeleton Dino Dig Excavation Kit Kids love playing paleontologist with the Geoworld Sea Monsters Mosasaurus Skeleton Excavation Kit Use the included hammer and chisel to remove the ''fossil bones'' from the gypsum brick, then assemble the skeleton model Comes with a stand, instructions and a booklet with fascinating facts about this swimming reptile For children age 6 and over Every Geoworld product is developed under the supervision of paleontologist Dr. Stefano Piccini