Well, we have finally gotten all the extraneous stuff off the skull. I think we totaled 6 Nautiloids, 2 ammonites and 8 bones that were attached to the skull when it was removed. The only thing left not of the skull is a part of the last nautiloid that can't be removed intact. That will have to be 'blown away' since it touches the skull interior bone in multiple places. It can't be worked free without damaging the skull - and the skull is ALL-IMPORTANT! I have put in about 50 hours removing all this stuff so far.
The best thing about removing part of the nautiloid is that the interior septums of the chambers can be seen. These nautiloids do not have a completely smooth septum - they are partially convoluted like ammonites. However the siphuncle is toward the middle of the shell, where ammonites have theirs at the very outside of the shell. This proves they really are nautiloids. These will be speciated later by someone who knows what they are doing.
So anyway here are some more pictures of where we are. Interior view, anterior (front) to the left. The remnant nautiloid is the funny lump over the middle of the ruler.
Sincerely, Greg Carr