Prismatointercepted pentachoron

The prismatointercepted pentachoron, or pinnip, is a nonconvex uniform polychoron that consists of 5 regular octahedra and 10 triangular prisms. 3 octahedra and 6 triangular prisms join at each vertex.

It is the simplest wild uniform polytope. It is in the same regiment as the rectified pentachoron.