Acristavus
Acristavus wuxuu ahaa dinosaur leh af sida duck-ga oo noolaa qiyaastii 80 milyan oo sano ka hor. Ma uusan lahayn wax taaj ah oo madaxiisa saaran, taas oo aan caadi ahayn qoyskiisa. Dhir-cunkan wuxuu ku socon jiray laba lugood, wuxuuna sidoo kale ku socon karayay afarta lugood.12
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dherer ahaan la eg 2 baabuur oo safan🍌dherer ahaan la eg 50 muus oo isku xiga
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Xaqiiqooyin xiiso leh
Acristavus wuxuu ka dhigan yahay 'awow aan lahayn taaj' sababtoo ah waa mid ka mid ah dinosaurs-ka ugu da'da weyn ee afka duck-ga leh ee aan lahayn taaj madaxa.1
Fossill-kiisa waxaa laga helay Two Medicine Formation ee Montana iyo Wahweap Formation ee Utah.5
Acristavus wuxuu noolaa intii lagu jiray marxaladda Campanian ee xilligii Late Cretaceous, qiyaastii 83 ilaa 72 milyan oo sano ka hor.1
Wuxuu ka tirsanaa koox loo yaqaan Brachylophosaurini, oo ay ku jiraan dinosaurs kale oo afka duck-ga leh sida Brachylophosaurus.1
Muunadda nooca ah, oo loo yaqaan MOR 1155, waa lafo qayb ah oo ka caawisay saynisyahannada inay aqoonsadaan noocan.5
Acristavus wuxuu ahaa dhir-cun dhulka ku nool oo ukun dhala, sida dhammaan dinosaurs-ka afka duck-ga leh.2
Su'aalaha ugu badan ee ku saabsan Acristavus
?Intee in le'eg ayuu ahaa Acristavus?
Saynisyahannadu weli ma daabicin qiyaas cabbir oo dhammaystiran, laakiin hadrosaur ahaan wuxuu u badnaa qiyaastii 8 ilaa 9 mitir (26 ilaa 30 cagood) oo dherer ah, qiyaastii inta uu le'eg yahay bas dugsi.35
?Acristavus ma lahaa taaj?
Maya. Acristavus waa mid gaar ah sababtoo ah ma uusan lahayn taaj ama qurxin madaxiisa saaran, si ka duwan inta badan dinosaurs-ka kale ee afka duck-ga leh.34
Khubarada dino
- Magaca sayniska
- Acristavus
- Waxaa magacaabay
- Gates et al. 20115
- Koox
- Dinos-ka afka-duck-ka leh
- Qoyska / kooxda
- Hadrosauridae5
- Kala soocidda
- Ornithischia > Ornithopoda > Iguanodontia > Hadrosauridae5
- Xilligii dhagaxyada
- 84 ilaa 72 milyan oo sano (Campanian)5
- Dhagaxyada
- Two Medicine, Wahweap5
- Waddamada
- USA5
- Diiwaanka fossil-ka
- 2 oo ku jira Paleobiology Database5
- Daahfurka
- Acristavus waxaa magacaabay Terry A. Gates, Jack Horner, iyo asxaabtiisa sanadkii 2011. Fossill-kii ugu horreeyay waxaa laga helay Montana iyo Utah.1
- Wali waa la isku khilaafsan yahay
- Saynisyahannadu ma hubo sababta Acristavus uu u la'aa taajka madaxa halka dinosaurs-ka kale ee afka duck-ga leh ay badankood lahaayeen.1
Halka xaqiiqadu ka timaaddo
- PBDB Taxon (paleobiodb.org)
- Acristavus Gates et al. 2011 - Encyclopedia of Life (eol.org)
- Acristavus (Wikipedia) (Wikipedia)
- Acristavus: North America’s New Hadrosaur (smithsonianmag.com)
- Acristavus in The Paleobiology Database (CC BY 4.0): da'da, meelaha, qaab-dhismeedka dhagaxyada, kala-soocidda.
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