I've been working to get the Sloth Skeleton completed. Was only missing the head. Sometime in the previous few days I seem to have turned in the piece but I don't have it and there are no rewards pending.
Hello, try deliver again Prehistoric Skull, Prehistoric Scapula or Skeletal Hand, it worked for me, in my case the problem was with the Prehistoric Skull, it appeared as delivered but it was not on the museum's shelves
