Phyllic disphenoid

A phyllic disphenoid is a type of tetrahedron with two pairs of identical scalene triangles as faces. They commonly appear as cells in various step prisms along with some other isogonal polychora.

In vertex figures
Phyllic disphenoids appear as vertex figures in a total of 6 uniform polychora, which are omnitruncates with a doubled symmetry. These include the great prismatodecachoron, great prismatotetracontoctachoron, great quasiprismatotetracontoctachron, distetracontoctachoron, tetracontoctirhombated tetracontoctachoron, and tetracontoctiquasirhombated tetracontoctachoron.