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Investigating intentional cranial modification: A hybridized two-dimensional/three-dimensional study of the Hirota site, Tanegashima, Japan

Intentional cranial modification has a long history, being a ubiquitous practice in many cultures around the world for millennia. The crania excavated at the Hirota site on Tanegashima Island, Kagoshima Prefecture, Japan, has been previously noted to have a marked tendency toward a short head and a flattened occipital bone, which has been suggested to be the result of artificial cranial deformation. However, whether this deformation was intentional or caused by unintentional habits remains unclear. This study aimed to investigate the characteristics of the cranial shape of the Hirota site to clarify whether the crania were intentionally modified. In the examination of Hirota crania, Kyushu Island Jomon and Doigahama Yayoi crania were added as comparative data and contrasted with three-dimensional (3D) surface scan imaging and two-dimensional outline-based geometric morphometric analysis, combined with objective assessments of potential cranial modification. The results showcased Hirota’s short and flattened cranial morphology, indicating clear alignment with our hypothesis that Hirota samples are morphologically different from Doigahama and Jomon samples. No sex-based differences were found. Morphological abnormalities in cranial sutures were visually assessed utilizing novel 3D visualization methods of cranial outer surfaces. Based on a comprehensive review of the results, we concluded that Hirota site crania were intentionally modified. Although the motivation of the practice is unclear, the Hirota people may have deformed their crania to preserve group identity and possibly aid in the long-distance trade of shellfish, as seen archaeologically.

Jomon , Hokkaido , Japan , Texas , United-states , Hakozaki , Fukuoka , Pacopampa , Cusco , Peru , Tanegashima , Japan-general-

Forensic Files-20150726-07:32:00

difference between females giving birth and males not. >> the shape of the skull suggested the victim was caucasian, and the cranial sutures were not yet closed, meaning the victim was young, between 18 and 24. the anthropologist also found evidence of knife wounds. >> i think we had one to the shoulder blade, six to the vertebrae, and then another four or five. so, 12 or 13 injuries that we discovered and mapped into the cut map. >> dr. gill-king ruled the manner of death to be homicidal violence. when word got out that a young woman had been murdered in yellow house canyon, calls started to pour in. >> one woman came up and said that she knew her husband had done it because he was a knife freak, and said, oh, by the way, we're having a custody battle tomorrow. can you give me a copy of this report for my lawyer?

Victim , Skull , Shape , Females , Birth , Males , Cranial-sutures , Evidence , Anthropologist , Knife-wounds , Vertebrae , Shoulder-blade

Forensic Files-20150322-05:02:00

>> the shape of the skull suggested the victim was caucasian, and the cranial sutures were not yet closed, meaning the victim was young, between 18 and 24. the anthropologist also found evidence of knife wounds. >> i think we had one to the shoulder blade, six to the vertebrae, and then another four or five. so, 12 or 13 injuries that we discovered and mapped into the cut map. >> dr. gill-king ruled the manner of death to be homicidal violence. when word got out that a young woman had been murdered in yellow house canyon, calls started to pour in. >> one woman came up and said that she knew her husband had done it because he was a knife freak, and said, oh, by the way, we're having a custody battle tomorrow, can you give me a copy of this report for my lawyer? >> investigators checked the

Victim , Skull , Shape , Cranial-sutures , 24 , 18 , Evidence , Anthropologist , Knife-wounds , Injuries , Vertebrae , Shoulder-blade

Forensic Files-20140705-08:32:00

>> the shape of the skull suggested the victim was caucasian, and the cranial sutures were not yet closed, meaning the victim was young, between 18 and 24. the anthropologist also found evidence of knife wounds. >> i think we had one to the shoulder blade, six to the vertebrae, and then another four or five. so, 12 or 13 injuries that we discovered and mapped into the cut map. >> dr. gill-king ruled the manner of death to be homicidal violence. when word got out that a young woman had been murdered in yellow house canyon, calls started to pour in. >> one woman came up and said that she knew her husband had done it because he was a knife

Skull , Victim , Shape , Cranial-sutures , 24 , 18 , Evidence , Anthropologist , Knife-wounds , Shoulder-blade , Vertebrae , One

Forensic Files-20140702-06:32:00

difference between females giving birth and males not. >> the shape of the skull suggested the victim was caucasian, and the cranial sutures were not yet closed, meaning the victim was young, between 18 and 24. the anthropologist also found evidence of knife wounds. >> i think we had one to the shoulder blade, six to the vertebrae, and then another four or five. so, 12 or 13 injuries that we discovered and mapped into the cut map. >> dr. gill-king ruled the manner of death to be homicidal violence. when word got out that a young woman had been murdered in yellow house canyon, calls started to pour in. >> one woman came up and said that she knew her husband had done it because he was a knife freak, and said, oh, by the way, we're having a custody battle tomorrow, can you give me a copy of this report for my lawyer?

Victim , Skull , Shape , Birth , Females , Males , Cranial-sutures , Evidence , Anthropologist , Knife-wounds , Shoulder-blade , Vertebrae

Forensic Files-20140609-07:32:00

it's all part of the birth difference between females giving birth and males not. >> the shape of the skull suggested the victim was caucasian, and the cranial sutures were not yet closed, meaning the victim was young, between 18 and 24. the anthropologist also found evidence of knife wounds. >> i think we had one to the shoulder blade, six to the vertebrae, and then another four or five. so, 12 or 13 injuries that we discovered and mapped into the cut map. >> dr. gill-king ruled the manner of death to be homicidal violence. when word got out that a young woman had been murdered in yellow house canyon, calls started to pour in. >> one woman came up and said that she knew her husband had done it because he was a knife freak, and said, oh, by the way, we're having a custody battle tomorrow, can you give me a copy of this report for my lawyer?

Victim , Skull , Part , Shape , Females , Birth , Males , Birth-difference , Cranial-sutures , 24 , 18 , Evidence

Forensic Files-20140225-09:02:00

it's all part of the birth difference between females giving birth and males not. >> the shape of the skull suggested the victim was caucasian, and the cranial sutures were not yet closed, meaning the victim was young, between 18 and 24. the anthropologist also found evidence of knife wounds. >> i think we had one to the shoulder blade, six to the vertebrae, and then another four or five. so, 12 or 13 injuries that we discovered and mapped into the cut map. >> dr. gill-king ruled the manner of death to be homicidal violence. when word got out that a young woman had been murdered in yellowhouse canyon, calls started to pour in. >> one woman came up and said that she knew her husband had done it because he was a knife freak, and said, oh, by the way,

Victim , Skull , Part , Shape , Birth , Females , Birth-difference , Males , Cranial-sutures , Evidence , Anthropologist , Knife-wounds