Navaornis

Izina risobanura: “Nava's bird, honoring William Nava who discovered the fossil site”1

Yaryaga: InyamaInyoni za mbereKiretase ya nyuma

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

Yabayeho

hashize imyaka miliyoni 84 kugeza 663

Kiretase ya nyuma

Ibisigazwa byabonetse muri

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

Umuvuduko wo hejuru

nka 27 km/h (17 mph)

Kuguruka, igereranya

Yabayeho ryari?

Triyasike

Jurasike

Kiretase

Hashize miliyoni 252 z'imyaka20114566, asiteroyide

Yihutaga ite?

Umuntu ugenda n'amaguru nka 5 km/h (3 mph)

Umwana ku igare nka 12 km/h (7 mph)

Navaornis nka 27 km/h (17 mph)

Ifarashi yiruka cyane nka 65 km/h (40 mph)

Ingwe yihuta cyane nka 100 km/h (62 mph)

utuntu twiza cyane

Utuntu dushimishije

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

Ishusho ya Navaornis yakozwe na AI — Ishusho yakozwe na AI yerekana uko Navaornis ishobora kuba yari isa, yakozwe na mudasobwa hashingiwe ku byo abahanga bazi. Ni ugukeka gusa: inyamaswa nyayo ishobora kuba yari isa ukundi, kandi nta muntu uzi amabara yayo nyayo.

Ku bazobereye muri dinozore

Izina rya siyansi: Navaornis
Yiswe na: Chiappe et al. 20243
Itsinda: Inyoni za mbere
Umuryango / ishami: Enantiornithes3
Ishyirwa mu byiciro: Theropoda > Avialae3
Imyaka y'amabuye: imyaka miliyoni 84 kugeza 66 (Campanian / Maastrichtian)3
Inzego z'amabuye: Adamantina3
Ibihugu: Burezili3
Ibisigazwa byanditswe: 1 muri The Paleobiology Database3
Ivumburwa: 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
Biracyagibwaho impaka: 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

Aho amakuru yakuwe

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): imyaka, ahantu, inzego z'amabuye, ishyirwa mu byiciro.

Buri kintu kiri kuri uru rupapuro gifite nimero yerekana aho cyakuwe. Niba hari icyo twibeshye, tubabarire, turi abakunzi ba dinozore, ntituri ikinyamakuru cya siyansi. Tubwire kuri [email protected] tuzagikosora.

Rex arashonje! Dino Wiki ni umushinga wa papa umwe yakoreye umuhungu we ukunda dinozore, ni ubuntu, nta matangazo kandi nta bigukurikirana. Abantu bakuru bashobora guha Rex akantu ko kurya kugira ngo Dino Wiki ikomeze kuboneka kuri interineti.Gaburira Rex