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Navaornis
Navaornis was a starling-sized bird that lived about 80 million years ago in what is now Brazil. It had a toothless, large-eyed skull that looked almost like a modern bird, but it belonged to an ancient group called enantiornithines. Its beautifully preserved skull let scientists see inside its brain for the first time in such an old bird.12
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Navaornis had a toothless skull with large eyes, just like many birds today, but its brain still had some ancient features like a small cerebellum and a weakly expanded telencephalon.1
Its skull is the best-preserved Mesozoic bird skull ever found, preserved in three dimensions without being flattened.1
The fossil site where Navaornis was found is very small, only about 6 square meters, but it has yielded hundreds of enantiornithine bird bones.1
Navaornis belongs to a group called Enantiornithes, which were the most diverse birds of the Mesozoic and lived on every continent except Antarctica.12
Its inner ear (bony labyrinth) was shaped like that of many modern birds but was much larger.1
Dino adituentzat
- Izen zientifikoa
- Navaornis
- Izendatzailea:
- Chiappe et al. 20243
- Taldea
- Lehen hegaztiak
- Familia / klada
- Enantiornithes3
- Sailkapena
- Theropoda > Avialae3
- Arroken adina
- 84 eta 66 milioi urte artean (Campanian / Maastrichtian)3
- Arroka-formazioak
- Adamantina3
- Herrialdeak
- Brasil3
- Fosil-erregistroak
- 1 The Paleobiology Database datu-basean3
- Aurkikuntza
- The fossil site was discovered in 2004 by William Nava, and the holotype skull was found in 2016. The species was named Navaornis hestiae by Chiappe and colleagues in 2024.13
- Oraindik eztabaidagai
- Scientists are still debating exactly how Navaornis is related to other enantiornithines, because its toothless skull and modern-looking head make it hard to place in the family tree.1
Datuak nondik datozen
- 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): adina, tokiak, arroka-formazioak, sailkapena.
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