Tetrahedral transitional biomnisnub decachoron

The tetrahedral transitional biomnisnub decachoron or tetbosid is a convex isogonal polychoron that consists of 10 gyrated great rhombitetratetrahedra, 20 triangular antiprisms, 30 rhombic disphenoids, 60 phyllic disphenoids, and 120 irregular tetrahedra. 2 gyrated great rhombitetratetrahedra, 1 triangular gyroprism, 1 rhombic disphenoid, 2 phyllic disphenoids, and 4 irregular tetrahedra join at each vertex. It is one of a total of 8 polychora that can be obtained as the convex hull of 2 snub pentachora.

Using the ratio method, the lowest possible ratio between the longest and shortest edges is 1:a ≈ 1:1.91395, where a is the largest real root of 225a8-1500a6+3110a4-2556a2+849.