Embark on a prehistoric adventure with these two engaging dinosaur skeleton puzzles: the three-horned Triceratops and the fearsome Spinosaurus! Made from a durable stone mix, these chunky, tactile pieces are built to last countless excavations in sand or soil. As children unearth each piece, they will be honing their observational skills by paying close attention to shapes and details that will help them assemble the puzzle. Size 8.5 - 10 inches.