Celliprismated heptapeton

The celliprismated heptapeton or copal, also called the steriruncinated heptapeton or steriruncinated 6-simplex, is a convex uniform polypeton. It consists of 7 celliprismated hexatera, 7 bitruncated hexatera, 21 decachoric prisms, 35 triangular-tetrahedral duoprisms, and 35 triangular-truncated tetrahedral duoprisms. 2 celliprismated hexatera, 1 bitruncated hexateron, 3 decachoric prisms, 1 triangular-tetrahedral duoprism, and 3 triangular-truncated tetrahedral duoprisms join at each vertex. As the name suggests, it is the steriruncination of the heptapeton.