EUGY - a super-fun 3D puzzle that's eco-friendly and can be assembled in 10 to 20 minutes! This collectable toy is great for STEM concepts and craftable fun. The Mosasaurus was a massive marine prehistoric reptile, and a relative of snakes and lizards. This 3D Mosasaur puzzle seems to have snagged an Ammonite in its jaws! This puzzle is a perfect arts and crafts activity to help pass some time and teach following instructions.