Swirlprismatodiminished rectified hexacosichoron

The swirlprismatodiminished rectified hexacosichoron, or spidrox,, is a convex scaliform polychoron. It consists of 120 pentagonal prisms, 120 pentagonal antiprisms, and 600 square pyramids.

It can be constructed by diminishing the Rectified hexacosichoron, specifically by removing the 120 vertices of an inscribed hexacosichoron. As a result every icosahedral cell of the rectified hexacosichoron gets diminished down to a pentagonal antiprism, while every octahedral cell gets diminished down to a square pyramid. The pentagonal prism cells are the vertex figures under the removed vertices.