Small petihexadecaexon

The small petihexadecaexon, small petated hexadecaexon or hexicated octaexon, also called the hexicated 7-simplex, is a convex uniform polyexon. It consists of 16 heptapeta, 56 hexateric prisms, 112 triangular-pentachoric duoprisms, and 70 tetrahedral duoprisms. 2 heptapeta, 12 hexateric prisms, 30 triangular-pentachoric duoprisms, and 20 tetrahedral duoprisms join at each vertex. As the name suggests, it is the hexication of the octaexon. It can be formed by expanding the facets of the octaexon outward and filling in the gaps with new facets.