So it’s basically an icosahedron whose faces have been split into six?
You know, now that I’m looking for that, I think I can see it.
If you connect the three closest major points, you make a triangle; that triangle contains six smaller triangles, and if you smoothed each of those larger triangles out, you’d have a d20 (which is as many faces as you can get using regular shapes).
So, in this picture below, one of the faces of the “d20” within the green die would be: 13,81,67,6,76,120.

I think I get it now. Thanks!