Two Compounds of Dipyramids from the Stellation-Series of the Tetrakis Cube

The 16th stellation of the tetrakis cube, the dual of the truncated octahedron, is a compound of three elongated octahedra, or square dipyramids:


The 65th stellation of this same polyhedron is of another compound of dipyramids, but these are triangular dipyramids with obtuse faces, and there are four of them:

Tetrakishexa stellation 4

I generated both of these images with Stella 4d:  Polyhedron Navigator, available right here.