Small prismated heptapeton

The small prismated heptapeton or spil, also called the runcinated heptapeton or runcinated 6-simplex, is a convex uniform polypeton. It consists of 7 dodecatera, 7 small prismated hexatera, 21 rectified pentachoric prisms, and 35 triangular-tetrahedral duoprisms. 1 dodecateron, 3 small prismated hexatera, 3 rectified pentachoric prisms, and 3 triangular-tetrahedral duoprisms join at each vertex. As the name suggests, it is the runcination of the heptapeton.