Small snubspinosnub prismatosnub trishexacositetrishexacosichoron

The small snubspinosnub prismatosnub trishexacositetrishexacosichoron, or sosanspos tuxtix, is a nonconvex uniform polychoron that consists of 1200 small stellated dodecahedra (some of which lie in the same hyperplanes, forming 600 pentagrammatic snub pseudodisoctahedra), 600 icosahedra and 600 great dodecahedra (forming 600 compounds of one of each), 2400 cuboctahedra and 2400 cubohemioctahedra (forming 2400 compounds of one of each), 600 octahemioctahedra (forming 120 icosidisicosahedra), 600 rhombidodecadodecahedra, 600 small dodecicosidodecahedra, 600 truncated icosahedra, and 3600 pentagrammic prisms.

Two small stellated dodecahedra (two compounds), one icosahedron and one great dodecahedron (two compounds), four cuboctahedra and four cubohemioctahedra (eight compounds), one octahemioctahedron (one compound), five rhombidodecadodecahedra, five small dodecicosidodecahedra, five truncated icosahedra, and five pentagrammic prisms join at each vertex.

It can be obtained as the blend of 5 small dipentary hexacositetrishecatonicosachora and 5 small capped dipentary prismatohexacositrishecatonicosachora. In the process, some of the cuboctahedron and cubohemioctahedron cells blend out.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the small diretrosnub disnub decahecatonicosadishexacosichoron.