MOSCOW, Janairu 2. /TASS/. Masana burbushin halittu na Amurka da masu nazarin halittu sun gano cewa tsohowar Sahelanthropus na da wani tsari na musamman na tibia, wanda ake samu a cikin mutane kawai da tsaffin tsafi, amma ba a cikin chimpanzees da sauran manyan primates waɗanda ba su da wannan ikon. Wannan ya sake nuna cewa Sahelanthropus na da ikon yin tafiya daidai, in ji ma’aikatar yada labarai ta Jami’ar New York (NYU).
“Binciken da muka yi game da kasusuwan kasusuwan Sahelanthropus da aka sani ya bayyana shaida ta farko kai tsaye cewa waɗannan tsohowar primates sun iya tafiya da ƙafafu biyu. Wannan yana nuna cewa ikon yin tafiya a tsaye ya bayyana a farkon juyin halittar kakanninmu, lokacin da a bayyanar suka yi kama da chimpanzees da bonobos na zamani,” in ji Mataimakin Farfesa Scott Williams, ma’aikacin jami’ar NYU.
Kamar yadda Williams da abokan aikinsa suka lura, Sahelanthropus tchadensis tsohon babban biri ne wanda ya rayu a yankunan tsakiyar Afirka kimanin shekaru miliyan 7 da suka wuce. An fara gano gawarwakinsu ne a shekara ta 2002 a arewacin kasar Chadi. Binciken da aka yi a kan kokon kai da gutsuttsuran kashi na Sahelanthropus ya nuna cewa dangi ne na kut-da-kut ga kakannin kakannin mutane da chimpanzees, ko kuma daya daga cikin kakannin gorilla.
Daga baya, masana kimiyya sun rabu kan ko Sahelanthropus dangin ɗan adam ne. Waɗannan rigingimu sun faru ne saboda yadda wasu masana ilimin ɗan adam suka yi shakkar ikon waɗannan tsaffin firamare na yin tafiya daidai. Shekaru uku da suka gabata, wannan muhawara ta tsananta bayan da Faransawa da masana ilimin halayyar dan adam na Afirka suka sanar da gano mace mace da ulnas guda biyu na Sahelanthropus, kwatankwacin sassa na kwarangwal na tsattsauran ra’ayi.
Tarihin burbushin halittu na juyin halittar bipedalism
To resolve these disputes, Williams and his colleagues comprehensively studied these findings, prepared their three-dimensional models and compared them with the structure of similar bones in modern chimpanzees, bonobos, gorillas, as well as ancient humans, australopithecines and other extinct primates. Wannan bincike ya bayyana wasu siffofi na musamman na jikin mutum na musamman ga madaidaitan hominids da Sahelanthropus.
Na farko daga cikin waɗannan shi ne kasancewar wani tsari na musamman akan femur su, wanda aka haɗa tendons da ke haɗa ƙashin ƙugu da cinya a cikin mutane da kuma hominids da australopithecines. Masana kimiyya sun kuma gano cewa wuyan mata na Sahelanthropus yana da siffar da ta fi dacewa wajen tafiya da kafafu biyu, kuma sun gano shaidun da ke nuna cewa tsokoki masu karfi suna makale a wannan kashi, wanda ke taimaka wa mutane gudu da sauri da kuma rike jiki a tsaye.
Masanan binciken burbushin halittu kuma sun lura cewa Sahelanthropus yana da yanayin da ba a saba gani ba na tsawon ulna da kasusuwa na femur, wanda ba a saba da birai na zamani da tsoffi ba, wadanda suka shafe yawancin rayuwarsu a kan rassan bishiya. Duk wannan, a cewar Williams da abokan aikinsa, suna magana ne game da gaskiyar cewa Sahelanthropus halittu ne madaidaici tare da kamanni na musamman da kuma yanayin motsi da ba a saba gani ba.
