Na dogon lokaci, ɗayan manyan sirrin da suka dabaibaye dinosaur ɗin da suka rigaya sun ban mamaki shine cigaban amfrayo. Yanzu masana kimiyya sun sami damar buɗe mayafin ɓoye.
Abin da kawai aka sani ya zuwa yanzu shi ne cewa dinosaur ɗin ya haɗu da ƙwai, amma tsawon lokacin da amfanonin suka sami kariya daga kwasfa, da kuma yadda suke haɓaka, ba a sani ba.
Yanzu an san cewa aƙalla embryos na hypacrosaurs da protoceratops sun shafe watanni uku (protoceratops) zuwa shida (hypacrosaurus) a cikin ƙwai. Tsarin shiryawa kanta kanta tayi jinkiri sosai. Dangane da wannan, dinosaur yana da alaƙa iri ɗaya da ƙadangare da kada - danginsu na kusa, waɗanda kamarsu ke yi a hankali.
A lokaci guda, ba hadi kawai ba, har ma da ci gaban amfrayo na dinosaur yana da kamanceceniya da matakai masu kamanceceniya a cikin tsuntsayen zamani, tare da bambancin da kawai kwayar halittar tsuntsaye ta dauki mafi kankanin lokaci. An buga labarin dake bayyana wannan binciken a cikin mujallar kimiyya ta PNAS.
Masana kimiyya daga Kwalejin Kimiyya ta USasa ta Amurka ne suka kammala wannan, waɗanda suka yi nazarin mummunan ƙadangare, saboda "makabartun" ƙwai da aka gano kwanan nan a ƙasashen Argentina, Mongolia da China. Yanzu akwai ƙarin shaida cewa wasu dinosaur suna da jini mai ɗumi, kuma, kamar tsuntsaye, ƙyanƙyashe yaransu. A lokaci guda, duk da jin duminsu da kwai da kwayayensu, a tsarinsu sun fi kusa da kada.
Babban mahimmin abin da ya kai ga yanke hukunci shine hakoran da ake kira embryonic. Ba tare da shiga cikin cikakken bayani ba, zamu iya cewa sun kasance nau'ikan kwatankwacin zoben zoben itacen. Bambanci kawai shi ne cewa sabbin layuka an ƙirƙira su kowace rana. Kuma ta hanyar kirga yawan irin wadannan yadudduka, masana kimiyya sun sami damar gano tsawon lokacin da kwayayen ke yaduwa.
Neman dan Argentina da sauran "makabartu" na da matukar mahimmanci, ganin cewa a baya an kayyade burbushin kwai dinosaur zuwa samfura iri daya, wadanda aka hada su da wasu guntun bawo. Kuma kawai a cikin shekaru ashirin da suka gabata hoton ya canza. Tabbatar da cewa ƙarshen abin da masana kimiyya suka yi nesa da na ƙarshe.
