Navaornis

Din no ase: “Nava's bird, honoring William Nava who discovered the fossil site”1

Ɔdii: NamNnomaa a wɔdii kanKretasias Awieeɛ

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.1 2

Ɔtenaa ase

mfeɛ ɔpepem 84 kɔsi 66 a atwam3

Kretasias Awieeɛ

Wɔhunuu fɔsil wɔ

William's Quarry at Sítio Paleontológico 'José Martin Suárez', Presidente Prudente, São Paulo State, Brazil1 3

Ntɛmntɛm a ɛsen biara

bɛyɛ 27 km/h (17 mph)

Wimtuo, nsusuiɛ

Berɛ bɛn na ɛtenaa ase?

Triasik

Jurasik

Kretasias

mfeɛ ɔpepem 252 a atwam20114566, ɔsoro ɛboɔ no

Na ɛyɛ ntɛm sɛn?

Onipa a ɔnante bɛyɛ 5 km/h (3 mph)

Abofra a ɔte sakre so bɛyɛ 12 km/h (7 mph)

Navaornis bɛyɛ 27 km/h (17 mph)

Ɔpɔnkɔ a ɔretu mmirika bɛyɛ 65 km/h (40 mph)

Kyiita bɛyɛ 100 km/h (62 mph)

nneɛma a ɛyɛ fɛ

Nsɛm a ɛyɛ anigye

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

Navaornis lived around 85 to 75 million years ago, during the Late Cretaceous period.1 2

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.1 2

Its inner ear (bony labyrinth) was shaped like that of many modern birds but was much larger.1

Yei yɛ Navaornis mfonini a AI yɛeɛ, sɛdeɛ ebia na ɔteɛ. Kɔmputa na ɛyɛeɛ firi deɛ nyansahufoɔ nim mu. Ɛyɛ nsusuiɛ: ebia na aboa ankasa no nte saa, na obiara nnim ne kɔla ankasa.

Ma dino ho animdefoɔ

Nyansahu din: Navaornis
Obi a ɔtoo din: Chiappe et al. 20243
Kuo: Nnomaa a wɔdii kan
Abusua / kuo kɛseɛ: Enantiornithes3
Nkyekyɛmu: Theropoda > Avialae3
Abotan no mfeɛ: mfeɛ ɔpepem 84 kɔsi 66 (Campanian / Maastrichtian)3
Abotan nhyehyɛeɛ: Adamantina3
Aman: Brazil3
Fɔsil nkyerɛwee: 1 wɔ The Paleobiology Database mu3
Nhunumu: 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 2024.1 3
Wɔda so gye ho akyinnye: 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

Baabi a nsɛm no firi

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): mfeɛ, mmeaeɛ, abotan nhyehyɛeɛ, nkyekyɛmu.

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