1-bitritetrahedral swirlprism

The 1-bitritetrahedral swirlprism is a convex isogonal polychoron. It consists of 48 phyllic disphenoids of two kinds and 240 irregular tetrahedra of five kinds as cells. 4 phyllic disphenoids and 20 phyllic disphenoids join at each vertex. It is one of the least symmetric of a number of isogonal polychora obtained as a convex hull of 2 icositetrachora.