Octagonal duotegum

The octagonal duotegum, also known as the octagonal-octagonal duotegum, the 8 duotegum, or the 8-8 duotegum, is a noble duotegum that consists of 64 tetragonal disphenoids and 16 vertices. It is also the 16-7 step prism. Together with its dual, it is the first in an infinite family of octagonal dihedral swirlchora.