Navaornis
Navaornis waxay ahayd shimbir le'eg shimbirta starling oo noolayd qiyaastii 80 milyan oo sano ka hor meesha hadda loo yaqaan Brazil. Waxay lahayd madax aan ilko lahayn oo leh indho waaweyn oo u ekaa shimbir casri ah, laakiin waxay ka tirsanayd koox qadiimi ah oo la yiraahdo enantiornithines. Madaxeeda oo si qurux badan loo kaydiyay ayaa u oggolaaday saynisyahannada inay markii ugu horreysay arkaan gudaha maskaxdeeda shimbir aad u da' weyn.12
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Xaqiiqooyin xiiso leh
Navaornis waxay lahayd madax aan ilko lahayn oo leh indho waaweyn, sida shimbiraha badan ee maanta, laakiin maskaxdeedu weli waxay lahayd astaamo qadiimi ah sida cerebellum yar iyo telencephalon si daciif ah u fiday.1
Madaxeedu waa madaxa shimbirta Mesozoic ee ugu wanaagsan ee abid la helo, oo lagu kaydiyay saddex cabbir iyada oo aan la simin.1
Goobta fossillka ee laga helay Navaornis waa mid aad u yar, qiyaastii 6 mitir oo laba jibbaaran, laakiin waxay soo saartay boqollaal lafaha shimbirta enantiornithine ah.1
Navaornis wuxuu ka tirsan yahay koox la yiraahdo Enantiornithes, kuwaas oo ahaa shimbiraha ugu noocyada badan xilligii Mesozoic, waxayna ku noolaayeen qaarad kasta marka laga reebo Antarctica.12
Dhegtiisa gudaha (qaybta lafaha) waxay u ekayd tii shimbiraha casriga ah ee badankooda, laakiin aad bay uga weynayd.1
Khubarada dino
- Magaca sayniska
- Navaornis
- Waxaa magacaabay
- Chiappe et al. 20243
- Koox
- Shimbiraha hore (xilligii dinos-ka)
- Qoyska / kooxda
- Enantiornithes3
- Kala soocidda
- Theropoda > Avialae3
- Xilligii dhagaxyada
- 84 ilaa 66 milyan oo sano (Campanian / Maastrichtian)3
- Dhagaxyada
- Adamantina3
- Waddamada
- Brazil3
- Diiwaanka fossil-ka
- 1 oo ku jira Paleobiology Database3
- Daahfurka
- Goobta fossillka waxaa helay sanadkii 2004 William Nava, madaxa holotype-ka waxaa la helay sanadkii 2016. Nooca Navaornis hestiae waxaa magacaabay Chiappe iyo asxaabtiisa sanadkii 2024.13
- Wali waa la isku khilaafsan yahay
- Saynisyahannadu weli way ku doodayaan sida saxda ah ee Navaornis ay ula xiriirto enantiornithines-ka kale, sababtoo ah madaxeeda oo aan ilko lahayn iyo muuqaalkeeda casriga ah ayaa ka dhigaya mid adag in lagu meeleeyo geedka qoyska.1
Halka xaqiiqadu ka timaaddo
- Cretaceous bird from Brazil informs the evolution of the avian skull and brain | Nature (nature.com)
- Cretaceous bird from Brazil informs the evolution of the avian skull and brain (pmc.ncbi.nlm.nih.gov)
- Navaornis in The Paleobiology Database (CC BY 4.0): da'da, meelaha, qaab-dhismeedka dhagaxyada, kala-soocidda.
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Archaeopteryx
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