Small stellated dodecahedral antiprism

The small stellated dodecahedral antiprism, great dodecahedral antiprism, or small stellated dodecahedron atop great dodecahedron, is a segmentochoron. It has 1 small stellated dodecahedron, 1 great dodecahedron, 12 pentagrammic pyramids, 12 pentagonal pyramids, and 30 tetrahedra as disphenoids as cells. It is an antiprism based on a small stellated dodecahedron and its dual great dodecahedron.

This polychoron appears as the vertex figure of the scaliform grand stellated hecatonicosachoric antiprism.