some process stuff for this!
I modeled the top skull in mudbox from a sphere, jaw & fangs were modeled in maya first & then imported into mudbox for sculpting, spine & shoulderblades & tubes were modeled in maya. I only modeled what was going to be seen in the finished comp.
then I brought everything into maya, added textures, added some mist, rendered two versions, composited them together, and painted over them. 8) I’ll get some better renders of the skull itself later maybe?