Square-snub dodecahedral duoantiprism

The square-snub dodecahedral duoantiprism, or squasniddap, is a convex isogonal polyteron that consists of 8 snub dodecahedral antiprisms, 12 square-pentagonal duoantiprisms, 20 triangular-square duoantiprisms, 30 digonal-square duoantiprisms, and 480 sphenoidal pyramids. 2 snub dodecahedral antiprisms, 1 square-pentagonal duoantiprism, 1 triangular-square duoantiprism, 1 digonal-square duoantiprism, and 5 sphenoidal pyramids join at each vertex. It can be obtained through the process of alternating the octagonal-great rhombicosidodecahedral duoprism. However, it cannot be made uniform.