Small rotational 8-3 bigyrochoron

The small rotational 8-3 bigyrochoron, also known as the broken tesseract, is a convex isochoric polychoron with 16 identical cells.

Each cell of this polychoron is completely asymmetric, with 1 mirror-symmetric octagon, 2 irregular heptagons, 1 mirror-symmetric hexagon, 1 kite, 4 irregular tetragons, and 2 scalene triangles for faces.