Ka taƙaita labarin:  (CNN) Tare da gano wani launin toka, fossilised jawbone a wani m kusurwa na Habasha, wani dalibi a Jami'ar Jihar Arizona iya canza mu fahimtar mu farkon kakanninmu. Wani bangare na ƙananan jaw shine mafi tsufa sanannen burbushin shaida na jinsin Homo, wanda mutane na zamani suke, a cewar wani binciken da aka buga a ranar Laraba a mujallar Science. An gano cewa wannan ƙashin jaw din ya wanzu ne shekaru miliyan 2.8 da suka wuce - wanda ya riga sauran burbushin da aka sani na zuriyar Homo da kimanin shekaru 400,000, a cewar Jami'ar Jihar Arizona. Chalachew Seyoum, dalibi mai digiri na biyu daga Habasha, ya sami burbushin - gefen hagu na ƙananan jaw tare da hakora biyar - yayin da yake kan binciken filin a yankin Afar na gabashin Habasha a shekara ta 2013. "Gaskiya, ya kasance wani lokacin farin ciki", in ji Seyoum, a cewar sanarwar manema labarai daga jami'ar. "Ina da ƙwarewa sosai a binciken ƙasa kuma na san inda za a iya samun ƙurar. Na hau wani ɗan tudu kuma na sami wannan samfurin daidai a gefen tudu. " Shekaru na burbushin yana nufin zai iya taimakawa wajen cika wani muhimmin rata a cikin iliminmu. Fossil da masunta suka samo na iya bayyana sabon nau 'in tsohuwar mutum. Hakanan yana nufin cewa jinsin Homo na iya samo asali kusan shekaru rabin miliyan da suka gabata fiye da yadda aka zata a baya. Masu bincike a baya sun sami burbushin ragowar da suka kasance shekaru miliyan 3 ko fiye, kamar kwarangwal na "Lucy", sanannen ragowar shekaru miliyan 3.2 na jinsin Australopithecus afarensis. An gano waɗannan ragowar a shekara ta 1974 ba da nisa da wurin da aka gano na baya-bayan nan ba. Masana kimiyya sun kuma sami burbushin da suka kasance shekaru miliyan 2.3 da kuma matasa, waɗanda suke cikin jinsin Homo kuma suna kusa da mutanen zamani. Amma har zuwa yanzu akwai kadan daga burbushin shaida daga 700,000 shekaru a tsakanin - wani muhimmin lokaci a cikin juyin halitta daga hominids kamar Lucy zuwa Homo jinsi. "Mahimmancin samfurin shine cewa yana ƙara bayanan bayanai zuwa wani lokaci a cikin kakanninmu wanda muke da bayanai kaɗan", in ji William H. Kimbel,...
An gano kwarangwal din ne a yankin Afar na Habasha, ba da nisa da inda aka gano "Lucy". An yi kwanan wata zuwa shekaru miliyan 2.8 da suka gabata, wanda ke nufin yana taimakawa wajen cike wani muhimmin rata a cikin iliminmu.