I'm not sure if anyone wants to read this, but, the reason this "primate arm" drew my attention is because I ran into a very similar case in Clarke County, AL during one of, or the, first trip down there. A woman saw, photographed and carefully carried off from a rural, illegal dump site an arm or leg of something that was very, very similar to this one. She took it to the county sheriff's office and they called in the state's dept of natural resources because they could see it was not from a human. The game & fish agency said they weren't sure what it was, so it was sent to the state's crime lab in Mobile by the sheriff.
The "bones" had been at the lab a month or more when I arrived and found out about it. Mike McLain's sister-in-law helped me track down the photo. The photo of the bones was shown to a veterinarian who could not identify the animal they came from. The woman checked with the county sheriff, but he had not received a report from the crime lab, After a long delay, the sheriff called the crime lab. They said that they had thrown away the bones because they were were not from a human and not part of a crime scene investigation.
Although all those involved were PO'ed, the crime lab had no legal obligation to try to identify the bones.
Those "old" bones and these "new ones" were so similar it's weird. The bones from down there still had some light brown hair on them. Just thought some might like to know about that other case of "bones".