Akazi kasohotse mu kinyamakuru cy'ubumenyi bw'ibyataburuwe mu bucukumbuzi. Kugira ngo bamenye, ku kihe kigero, abahanga bapima amagufwa yabo. Muri iki kibazo, iteganyagihe ni ngombwa kuko igufasha kumenya harimo impamvu nyamukuru y'urupfu. Uburyo gakondo bwo kugereranya imyaka yintama zapfuye zishingiye ku i amenyo (kuba amenyo) na epiphyseal (isesengura ryisonga rya karitsiye) amakuru. Ibi bitanga intera ntarengwa imyaka myinshi - kuva kumyaka yavutse kugera hafi yingimbi. Kugirango umenye neza impfu za mbere kandi zambere zintama zimaze kugaragara mumiryango yabanjirije amateka, birakenewe neza.
Abahanga bo muri Munich (Ubudage) na kaminuza ya Istanbul (Turukiya) bavuze ko bakemuye iki kibazo bafashijwe n'igipimo rusange cy'ibitugu byavutse cyangwa bizwi neza neza (amakuru yatwaye atlas antatoical mubihugu bitandukanye).
Abashakashatsi bakoresheje uburyo bushya iyo basesenguye amagufwa intama zitwite n'uburiganya bw'inyamanswa z'Abaroma muri Siemu (Misiri), ndetse n'ibisigazwa by'intama biboneka muri parikingi-Hyuyuk (Turukiya) yakundaga cyane neolithic. Aha hantu haratuwe kuva 8350 kugeza 7300 kugeza ibihe byacu. Kandi isesengura ryamagufa ya skeletons yinyamanswa yasanze hariya yerekana ko ibyiringiro byintama byakuze buhoro buhoro muri iki gihe cyigihe. Nk'uko abahanga bavuga ko ibi biterwa n'uko abungeri bo hambere batangiye kumva isano iri hagati yo kubaho kw'intama zikiri nto n'imiterere y'ibirimo hanyuma bigenda buhoro buhoro.
Shakisha kwerekana ko mugice cyambere cyo gutorokama intama, abantu mugutura bagabujijwe cyane cyane kuba bahagaritse guhiga. Nyuma ariko, intama yatangiye gutanga igice kinini cyinyamaswa poroteyine. Abanditsi b'Urwibutso bemeza ko impamvu nyamukuru zitera impfu z'intama mu ntangiriro za neolithic yo mu buryo bwa mbere, kwandura imirire mibi, amacumbi yuzuye amatungo no kurisha budahagije.
Inkomoko: Ubumenyi bwambaye ubusa