Square disphenoid

The square disphenoid or digonal duoantiwedge is a convex noble polyteron with 8 square scalenes and 8 vertices. However, it cannot be made scaliform, because the height between the two squares is 0 if all edges are of the same length, making it a hexadecachoron instead. Along with the digonal tetrahedroorthowedge, it is one of the two known isogonal polytera with 8 vertices.