Snub-disphenoidal 8-3 quadruple step prism

The snub-disphenoidal 8-3 quadruple step prism is a convex isogonal polychoron, formed as a convex hull of four 8-3 step prisms in a way that leaves eight corealmic vertices corresponding to a snub disphenoid. It consists of 8 snub disphenoids, 16 digonal-rectangular gyrowedges, and 32 phyllic disphenoids of two kinds. 2 snub disphenoids,3 digonal-rectangular gyrowedges, and 4 phyllic disphenoids join at each vertex.

It can be constructed as a subsymmetrical faceting of the tesseractihexadecachoron.