He and his colleague argue that drilling another animal would cause fractures in and around the wound – features that are missing in the skull. They also negate the possibility that the hole was created by people looking for bones for tools or for natural causes, such as a tumor or even invasion by insects.
The researchers argue instead that the almost square shape of the hole, the absence of any markings indicating pressure from an external force, and the presence of cut marks around the hole indicate that the injury was due to surgery. Since there is no evidence of cure, they believe that the procedure was performed on a dead cow or that the cow did not survive.
Interestingly, the location of the hole agrees where trephining procedures typically occur in humans.
Froment explained: "This location on the skull does not cause internal bleeding because there is no venous sinus under the bone at this location."
Ramirez Rozzi told Seeker that evidence of trepanation is found all over the world and over multiple periods of time. Froment made it clear that the oldest trepanierten human skull was found in the Ukraine and on approximately 7,300-6,200 v. Chr. Is dated. In France, the oldest trepanierten human skull is about 7,000 years old, he added.
The researchers previously suspected that a Neolithic boar was also trephined, but they could not directly examine this skull.
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Although their work presents a few different scenarios for explaining bone surgery, both authors favor the idea that Neolithic humans practiced surgical procedures before you apply it to humans.
Ramirez Rozzi said, "You see a lot of experience in human skull trepanning, and the question has always been, how could those who performed these procedures have the knowledge to make them so perfect?" Certainly they must before they are operated on living people. "
He then admitted," This is a guess, but it follows logical thinking. "
It will be difficult to identify the remains for other animals that may have been used during possible surgery.
As Ramirez Rozzi said: "Unfortunately, skulls showing this practice are likely to be lost among many other skulls and hopefully more attention will be paid to it in the future."