Bo-rasaense ba fumana hore na li-dinosaurs li kentse mahe halelele hakae

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Nako e telele, e 'ngoe ea liphiri tse kholo tse potileng li-dinosaurs tse neng li se ntse li makatsa e bile kholo ea mahe a emolisitsoeng. Hona joale bo-rasaense ba khona ho bula lesira la lekunutu.

Sohle se tsebahalang ho fihlela joale ke hore li-dinosaurs li qhotsitse mahe, empa mahe a emolisitsoeng a sirelelitsoe ke khetla, le hore na a hola joang, ho ne ho sa hlaka.

Hona joale hoa tsebahala hore bonyane mahe a emolisitsoeng a li-hypacrosaurs le protoceratops a qetile likhoeli tse tharo (protoceratops) ho isa ho likhoeli tse tšeletseng (hypacrosaurus) ka lehe. Ts'ebetso ea poloko ka boeona e ne e le butle haholo. Ntlheng ena, li-dinosaurs li ne li tšoana haholo le mekholutsoane le likoena - beng ka tsona ba haufi, bao lithupa tsa bona li koahelang butle haholo.

Ka nako e ts'oanang, ha se manyolo feela, empa le nts'etsopele ea mahe a dinosaur a bile le ho tšoana ho hongata le lits'ebetso tse ts'oanang le linonyana tsa sejoale-joale, ka phapang e le 'ngoe feela eo ho kenella ha linonyana ho nkileng nako e khuts'oane haholo. Sengoloa se hlalosang tšibollo ena se phatlalalitsoe koranteng ea mahlale PNAS.

Qeto ena e entsoe ke boramahlale ba tsoang US National Academy of Sciences, ba ithutileng mekholutsoane e tšabehang, ka lebaka la "mabitla" a mahe a sa tsoa sibolloa Argentina, Mongolia le China. Joale ho na le bopaki bo bong ba hore li-dinosaurs tse ling li ne li le mali a futhumetseng mme, joalo ka linonyana, li qhotsa malinyane a tsona. Ka nako e ts'oanang, leha ba ne ba na le mali a futhumetseng le ho chesa mahe, ka sebopeho sa bona ba ne ba ntse ba le haufi le likoena.

Ntho e ka sehloohong e lebisitseng liqetong tse joalo e ne e le meno a bitsoang embryonic. Ntle le ho qaqisa, re ka re e ne e le mofuta oa manaka a lifate le lifate. Phapang e le 'ngoe feela ke hore mekhahlelo e mecha e thehiloe letsatsi le letsatsi. Mme ka ho bala palo ea likarolo tse joalo, boramahlale ba ile ba khona ho fumana hore na ho nkile nako e kae ho alama mahe.

Ho fumana "mabitla" a Argentina le a mang "ho bohlokoa haholo, ho fanoe ka taba ea hore mahe a dinosaur a khale a ne a lekantsoe mefuteng e le 'ngoe feela, e neng e eketsoa ke likhechana tsa likhetla. Setšoantšo se fetohile feela lilemong tse mashome a mabeli tse fetileng. U ka kholiseha hore qeto e boletsoeng ka holimo e entsoeng ke bo-rasaense e hole le ea ho qetela.

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