Small spinoprismatotesseractihexadecachoron

The small spinoprismatotesseractihexadecachoron, or snappoth, is a nonconvex uniform polychoron that consists of 16 tetrahedra, 32 triangular prisms, and 8 small rhombihexahedra. One tetrahedron, three triangular prisms, and three small rhombihexahedra join at each vertex.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the small disprismatotesseractihexadecachoron.