Square-small rhombicuboctahedral duoprism

The square-small rhombicuboctahedral duoprism or squasirco is a convex uniform duoprism that consists of 4 small rhombicuboctahedral prisms, 18 tesseracts of two kinds, and 8 triangular-square duoprisms. Each vertex joins 2 small rhombicuboctahedral prisms, 1 triangular-square duoprism, and 3 tesseracts. It is a duoprism based on a square and a small rhombicuboctahedron, which makes it a convex segmentoteron.

The square-small rhombicuboctahedral duoprism can be vertex-inscribed into a small cellated penteractitriacontaditeron.

This polyteron can be tetrahedrally alternated into a partially-expanded demipenteract, which is scaliform.

Vertex coordinates
The vertices of a square-small rhombicuboctahedral duoprism of edge length 1 are given by all permutations of the last three coordinates of:
 * $$\left(±\frac12,\,±\frac12,\,±\frac12,\,±\frac12,\,±\frac{1+\sqrt2}{2}\right).$$

Representations
A square-small rhombicuboctahedral duoprism has the following Coxeter diagrams:
 * x4o x4o3x (full symmetry)
 * x x x4o3x (small rhombicuboctahedral prismatic prism)