Well, here's something I tried that didn't work ...
On a pack-in elk hunt this year I took a sawzall blade with a couple inches of duct tape on the end to use as a bone saw.
After getting through the lower leg bones on a bull, I was glad I didn't have to do any skull work ...
It's one experiment that won't be repeated.
Also, I used to own a sven saw. Very cool, but bone is the last thing I'd want to do with it. Have also cut bone with my folding Sierra Saw. It worked, but the blade was toast.
The sawzall blade idea was just for backpacking. If you can get the head back to the truck, the sky is the limit for tools that will work, including a hacksaw. Last taxidermist I saw do such a job used a Ryobi battery powered sawzall.
