Trophy head armature

This week seems to be armature week.  As well as the mummified head I've got a trophy head armature on the go.  Remember the papillae I made?  I'll be using them in the trophy head as you can see in the photo.  I've started to build up gill arches and other mouth interior details inside the armature.

Basically, the head armature is a wire and cardboard frame.  This frame is mostly hollow, made up as a series of triangles to ensure it's both strong and lightweight.  

It will have a lower jaw some time in the future, but it's much easier for me to get my hands inside to work on the interior before I make up the mandible.  From the back, you can see that it's constructed out of triangular cells, kind of like a roof truss and for much the same reason.