Prismatohemidecachoron

The prismatohemidecachoron, or phud, is a nonconvex uniform polychoron that consists of 20 triangular prisms and 5 octahemioctahedra. Six triangular prisms and three octahemioctahedra join at each vertex.

It also has 10 tetrahedra as pseudofacets.

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