Swirlprismatodiminished small prismatotetracontoctachoron

The swirlprismatodiminished small prismatotetracontoctachoron is an isogonal polychoron with 48 square antiprisms, 384 phyllic disphenoids of two kinds and 96 vertices.

It can be constructed by removing an inscribed bitetracontoctachoron of edge length $\sqrt{2+√2}$ from a small prismatotetracontoctachoron.

Isogonal derivatives
Substitution by vertices of these following elements will produce these convex isogonal polychora:
 * Square antiprism (48): Tetradisphenoidal diacosioctacontoctachoron
 * Square (48): Tetradisphenoidal diacosioctacontoctachoron
 * Edge (96): Swirlprismatodiminished small prismatotetracontoctachoron