Small snub rhombatotetrahedral hecatonicosachoron

The small snub rhombatotetrahedral hecatonicosachoron or siserthi is a convex isogonal polychoron that consists of 120 trapezoexpanded snub tetrahedra, 120 rhombitetratetrahedra, 720 wedges, and 720 phyllic disphenoids. 2 trapezoexpanded snub tetrahedra, 1 rhombitetratetrahedra, 3 wedges, and 2 phyllic disphenoids join at each vertex. However, it cannot be made scaliform.