Kwa nthawi yayitali, chimodzi mwazinsinsi zazikuluzikulu zodziwika bwino za ma dinosaurs chinali kukula kwa mazira awo. Tsopano asayansi adatha kutsegula chinsinsi.
Zomwe zakhala zikudziwika mpaka pano ndikuti ma dinosaurs amasungunula mazira, koma milingoyo idatetezedwa ndi chipolopolocho, komanso momwe amakulira, sizikudziwika bwinobwino.
Zadziwika tsopano kuti osachepera mazira a ma hypacrosaurs ndi ma protoceratops adakhala miyezi itatu (protoceratops) mpaka miyezi isanu ndi umodzi (hypacrosaurus) mu dzira. Njira yoyeserera yokha inali yochedwa kwambiri. Pachifukwa ichi, ma dinosaurs anali ofanana kwambiri ndi abuluzi ndi ng'ona - abale awo apamtima, omwe nkhwangwa zawo zimalumikizana pang'onopang'ono.
Panthaŵi imodzimodziyo, osati umuna wokha, komanso kukula kwa mazira a dinosaur anali ndi kufanana kofananako ndi njira zofananamo mu mbalame zamakono, ndi kusiyana kokha komwe makulitsidwe a mbalame amatenga nthawi yayifupi kwambiri. Nkhani yofotokozera izi idasindikizidwa mu magazini yasayansi PNAS.
Izi zidapangidwa ndi asayansi ochokera ku US National Academy of Science, omwe adaphunzira abuluzi owopsa, chifukwa cha "manda" a mazira omwe apezeka posachedwa ku Argentina, Mongolia ndi China. Tsopano pali umboni wina wosonyeza kuti ma dinosaurs ena anali ndi magazi ofunda ndipo, monga mbalame, amaswa ana awo. Nthawi yomweyo, ngakhale anali ndi magazi ofunda komanso osakaniza mazira, momwe amapangidwira anali pafupi ndi ng'ona.
Chinthu chachikulu chomwe chinalola kuti mfundozi zichitike chinali chomwe chimatchedwa mano a mluza. Popanda kufotokoza mwatsatanetsatane, tikhoza kunena kuti anali ofanana ndi mphete ndi mitengo. Kusiyana kokha ndikuti magawo atsopano amapangidwa tsiku lililonse. Ndipo powerengera kuchuluka kwa zigawozi, asayansiwo adatha kudziwa kutalika kwa mazira.
Kupeza "manda" aku Argentina ndi kwina ndikofunika kwambiri, popeza kuti mazira akale a dinosaur kale anali ochepa pamitundu imodzi, yomwe idathandizidwa ndi zidutswa za zipolopolo. Ndipo m'zaka makumi awiri zokha zapitazi chithunzicho chidasintha. Mutha kukhala otsimikiza kuti zomwe zanenedwa pamwambapa ndi asayansi sizotsiriza.
