Skully is part of the educational series of resins to help you learn and enjoy anatomy! 
The skull and neckbones are shown in 3D against a square background which means you can not only paint and use them as a reference but you can also sculpt your own muscles on top to learn in a more kinetic way! 
 
This was a tool I wished I had had when learning anatomy and it brings me joy to be able to bring it to you!