I was missing the cavemen at the Fort Worth Museum of Science and History so much that I wrote an email when we got home. I asked the Curator what happened to my all time favorite representation of prehistoric surgery.
This was the disturbing response:
When we dismantled the History of Medicine exhibit, we gave it to the UNT Health Science Center. They were storing it and planned to install it in a new building. Unfortunately, the Tindell Warehouse burned down and the exhibit was lost. I have attached a photo of the cavemen and they are indeed dusty.