4 different dinosaur puzzles: T-Rex, Spinosaurus, Triceratops, and Stegosaurus, with an extra surprise: Turn out the lights to see their bright glow-in-the-dark skeletons! Artist Linda Bleck’s vivid artwork brings these ancient giants to life. Each puzzle is 12 inches x 15 inches when completed. Each puzzle is 36 pieces. Puzzles have different color backgrounds for easy sorting. Sustainably Sourced: Made with recycled board and printed on FSC®-certified paper using vegetable-based inks.