Animal Skull who should have been in the tomb with his death offerings before the mud filled it up. Those of carefully dug out some of the mud and saw offering holes that had hardened around them, but not the offerings themselves. So the digging scholars decided it was better to stop and not go any further with that particular dig.
They had assumed that since a body was on a cot and covered with many cotton layers dipped in sacred red earth, that he was Animal Skull who was placed in the tomb after the flooding with so much mud. If the mud had had time enough to harden, the body would not have been so perfect for such a burial. It is quite possible that the name of the second body, over rode the honorable name of the person in the first burial.