Bicrystallotetracontoctachoron

The bicrystallotetracontoctachoron is a convex isochoric polychoron with 288 order-3 truncated square pyramids as cells. It can be obtained as the dual of the biprismatotetracontoctachoron.

Each cell of this polychoron has square pyramidal symmetry, with 1 octagon, 4 mirror-symmetric pentagons, and 4 isosceles triangles for faces.