Claim: Great rhombihexacron, a star polyhedron with 24 faces, 48 edges, and 18 vertices, is a nonconvex isohedral polyhedron.
Evidence: Type Star polyhedron In geometry, the great rhombihexacron (or great dipteral disdodecahedron) is a nonconvex isohedral polyhedron. It has 24 identical bow-tie-shaped faces, 18 vertices, and 48 edges.