Birumvikana,Pterosaurianubwoko bwambere mumateka yabashije kuguruka mwisanzure mwijuru.Inyoni zimaze kugaragara, birasa naho byumvikana ko Pterosauria yari abakurambere b'inyoni.Ariko, Pterosauria ntabwo yari abakurambere b'inyoni zigezweho!
Mbere ya byose, reka tubyumve neza ko ikintu cyibanze cyinyoni ari ukugira amababa afite amababa, ntabashe kuguruka!Pterosaur, izwi kandi ku izina rya Pterosauria, ni ibikururuka hasi byazimye byabayeho kuva Late Triassic kugeza ku iherezo rya Cretaceous.Nubwo ifite ibiranga kuguruka bisa cyane ninyoni, ntabwo zifite amababa.Byongeye kandi, Pterosauria ninyoni byari ibya sisitemu ebyiri zitandukanye mugihe cyubwihindurize.Nubwo bakura gute, Pterosauria ntishobora guhinduka inyoni, kereka abakurambere b'inyoni.
None inyoni zavuye he?Kugeza ubu nta gisubizo gifatika kiri mu bumenyi.Gusa tuzi ko Archeopteryx ninyoni ya mbere tuzi, kandi zagaragaye mugihe cyanyuma cya Jurassic, zibaho mugihe kimwe na dinosaur, birakwiye rero kuvuga ko Archeopteryx ariwe sekuruza winyoni zigezweho.
Biragoye gukora ibisigazwa by’inyoni, bigatuma kwiga inyoni za kera bigorana.Abahanga barashobora gusa gushushanya urutonde rwinyoni ya kera bashingiye kuri ibyo bimenyetso byacitsemo ibice, ariko ikirere nyacyo cya kera gishobora kuba gitandukanye rwose nibitekerezo byacu, ubitekerezaho iki?
Kawah Dinosaur Urubuga rwemewe:www.kawahdinosaur.com
Igihe cyo kohereza: Nzeri-29-2021