Navaornis

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

Raidya: NyamaShiri dzekutangaCretaceous Yekupedzisira

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

Raivapo

makore mamiriyoni 84 kusvika 66 apfuura3

Cretaceous Yekupedzisira

Mafosiri akawanikwa:

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

Kumhanya kwepamusoro

kunenge 27 km/h (17 mph)

Kubhururuka, fungidziro

Rairarama rini?

Triassic

Jurassic

Cretaceous

makore mamiriyoni 252 apfuura20114566, dombo guru rakabva mudenga

Raimhanya zvakadii?

Munhu achifamba kunenge 5 km/h (3 mph)

Mwana ari pabhasikoro kunenge 12 km/h (7 mph)

Navaornis kunenge 27 km/h (17 mph)

Bhiza richimhanya kunenge 65 km/h (40 mph)

Dindingwe kunenge 100 km/h (62 mph)

zvinhu zvinonakidza

Zvinonakidza

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

Mufananidzo wakagadzirwa neAI: Navaornis — Mufananidzo wakagadzirwa neAI unoratidza kuti Navaornis ringangodai raitaridzika sei, wakagadzirwa nekombiyuta kubva pane zvinozivikanwa nemasayendisiti. Ifungidziro chete: mhuka chaiyo ingangodai yaitaridzika zvakasiyana, uye hapana anoziva mavara ayo chaiwo.

Zvevanyanzvi vemadhino

Zita resainzi: Navaornis
Akaripa zita:: Chiappe et al. 20243
Boka: Shiri dzekutanga
Mhuri / boka: Enantiornithes3
Kurongwa kwemhuka: Theropoda > Avialae3
Zera rematombo: makore mamiriyoni 84 kusvika 66 (Campanian / Maastrichtian)3
Mapoka ematombo: Adamantina3
Nyika: Brazil3
Zvinyorwa zvemafosiri: 1 mu The Paleobiology Database3
Kuwanikwa: 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
Zvichiri kupokanwa: 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

Kunobva chokwadi

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): zera, nzvimbo, mapoka ematombo, kurongwa kwemhuka.

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