"I-Pittacosaurus" isho into edlula nje i- "lizard-parrot." Futhi waqanjwa kanjalo ngenxa yesakhiwo semihlathi esingajwayelekile, esifana nomlomo wopholi. Wadonsa amaqabunga namagatsha ezihlahla. I-paolin yahamba ngemilenze emibili, kodwa uma kwenzeka ingozi yangena ngethonya ezine. Ososayensi abakwazanga ukuthola izinsalela zama-dinosaurs amadala kuphela, kodwa nezinsana. Ngisho nezingane zazinamazinyo, ukuze kuthi kusukela zisencane zikwazi ukuthola ezazo ukudla. Njengezinkukhu namadada zanamuhla, ama-psittacosaurs agwinya amatshe amancanyana ukuze ukudla kugayeke kangcono.
I-psittacosaurus yayingeyikhulu: ubude bayo babungaba imitha eyi-1, futhi isisindo sayo sasingaphezu kwama-15 kilogramu.
Abanye ososayensi bathi i-psittacosaurus ngokulandelana kwama-ceratops, yize zingenazo izimpondo nokukhula ebunzini. Futhi nokho, imilomo ye-ceratopsians ne-psittacosrens ifana kakhulu, futhi isakhiwo sekhanda sicishe sifane. Ngokusobala, ososayensi baqinisile: ama-psittacosaurs angaba ngabanduleli abaphambili bama-ceratops. Lokhu kufakazelwa okunye okutholwe eMongolia, lapho kwatholakala khona idayinaso engaziwa kuze kube manje, eyayinekhola yentamo eyayinezikhula ezifana ne-protoceratops, futhi uqhwaku lwayo cishe lwaluyikhophi eliqondile lomlomo we-psittacosaurus.
Ngokokuqala ngqa, izinsalela ze- "parrot lizard" zatholakala ngezimfundiso zaseMelika zikaHenry Osborne ngonyaka we-1923, ngesikhathi somsebenzi wokuxoshwa kwe-paleontological emaqeleni aseMongolia. Ngemuva kwalokho inhlanhla yahambisana no-Osborne: ukutholwa okumangalisa kwenziwa, okwaphoqa ukubukeka okusha kwama-dinosaurs asendulo.
Isibonelo, uHenry Osborne uphakamise ukuthi ama-psittacosaurs angadla ngokuthula kanye namanye ama-dinosaurs e-herbivorous, ngokwesibonelo, ama-veurosaurs. Ama-psittacosaurs amancane aququda amaqabunga kanye namahlumela amasha aqhamuka ngaphansi, futhi abezokuvakasha abakhudlwana bathola ukudla kwabo phezulu kwezihlahla.
Ngokumangazayo, izinhlobo ezimbili zama-dinosaurs zihlanganela ndawonye ukuze zizizwe zisondela ngesikhathi. Lapho nje umzingeli efika emkhawulweni wokubonakala, ama-dinosaurs axwayisa abanye ngokuzwakalayo futhi ahlakazeke ngezindlela ezihlukile, edida izihlobo ezinobuqili.
Kuyamangaza futhi ukuthi izinsalela zamaqhude ezinjalo zitholakala eYurophu. Ngaphezu kwalokho, kunesizathu sokukholelwa ukuthi i-psittacosaurus yake yakha ingxenye yeRussia yanamuhla. Manje ososayensi bacishe baqiniseka ngeziphetho zabo, kusalokhu kubasekela ngomphumela we-paleontological.
Umnotho
Igama elithi psittacosaurus laqalwa ngo-1923 nguHenry Fairfield Osborn, isazi se-paleontologist, umongameli weMelika Museum of Natural History, esihlokweni esakhishwa ngo-Okthoba 19. Igama elijwayelekile lakhiwe ngamagama esiGreek ψψτττας / psittakos (upholi) no-σαυρος / sauros (lizard), futhi libonisa ukufana kwangaphandle kwekhanda lesilwane ngomlomo wepherothi nemvelo yazo.