Pentacubic extended duoantiprism

The pentacubic extended duoantiprism, or pecuexdap, is a nonconvex uniform polychoron that consists of 20 pentagrammic retroprisms, 20 pentagonal antiprisms, 100 cubes, 100 octahedra, and 200 triangular prisms. Two pentagrammic retroprisms, two pentagonal antiprisms, eight cubes, six octahedra, and twelve triangular prisms join at each vertex.

It was discovered by _Geometer in 2020.