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Kaadi ya dayinoso No. 0900 ku 2 027

Janavis

Erinnya litegeeza: “Janus bird, after the Roman god of beginnings and endings”1

Yalyanga: EnnyamaEbinyonyi eby'olubereberyeEnkomerero ya Kuretasi

Janavis was a toothed bird that lived right at the end of the Age of Dinosaurs. It was one of the last birds with teeth, and its skull could move like a modern bird's skull.1

Yabeerawo

emyaka obukadde 72 okutuuka ku 66 emabega3

Enkomerero ya Kuretasi

Ebisigalira byazuulibwa mu

Eben Emael, Belgium1

Obugazi bw'ebiwaawaatiro

1.5 m (4.9 ft)1

Obuzito

1.12 kg okutuuka ku 1.604 kg (2 okutuuka ku 4 lb)1

Sipiidi esinga

nga 42 km/h (26 mph)

Okubuuka, kuteebereza

Yabeerawo ddi?

Tiriyasi

Jurasiki

Kuretasi

Emyaka obukadde 252 emabega20114566, asteroyidi

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obuzito ng'obw'amenvu 13

obuwanvu nga kkapa 3 ab'awaka, ennyindo ku mukiraobuzito butono okusinga kkapa ow'awakaobuzito ng'obw'amenvu 13yandibuuse okusomoka ekisaawe ky'omupiira kyonna mu sikonda 9

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Omuntu atambula nga 5 km/h (3 mph)

Omwana ku kagaali nga 12 km/h (7 mph)

Janavis nga 42 km/h (26 mph)

Embalaasi edduka ennyo nga 65 km/h (40 mph)

Cheetah nga 100 km/h (62 mph)

ebintu ebinyuvu

Ebyewuunyisa

Janavis lived about 66.8 million years ago, just 800,000 years before the asteroid that killed the dinosaurs.1

Its wing bones were hollow and filled with air, like modern birds, making it lighter for flying.1

The fossil was found in a Belgian quarry in 2000 by an amateur fossil hunter named Rudi Dortangs.1

Janavis had a skull that could move its upper jaw up and down, a feature of modern birds called neognathous palate.1

Scientists first thought a piece of its skull was a wing bone, until a CT scan in 2021 showed the truth.1

Janavis was bigger than its relative Ichthyornis, with a wingspan of about 1.5 metres (5 feet).1

Ekifaananyi kya Janavis ekyakolebwa AI, nga kiraga engeri gye yayinza okuba ng'afaanana, ekyakolebwa kompyuta okusinziira ku ebyo bannassaayansi bye bamanyi. Kuteebereza: ekisolo ekyennyini kiyinza okuba nga kyali kifaanana bulala, era tewali amanyi langi zaakyo ez'amazima.

wabuuza

Ebibuuzo ebisinga okubuuzibwa ku Janavis

?How big was Janavis?

Janavis was a relatively large bird, with an estimated wingspan of about 1.5 metres (5 feet) and a weight of around 1.5 kilograms (3.3 pounds).1 2

?Did Janavis have teeth?

Yes, Janavis had teeth. It was one of the last toothed birds to ever live.1 2

?When did Janavis live?

Janavis lived about 66.8 million years ago, right at the end of the Cretaceous period, just 800,000 years before the asteroid impact.1

?Could Janavis fly?

Yes, Janavis could fly. Its wing bones were hollow and filled with air, like modern birds, making it lighter for flying.1

Omumenyi w'enfumo

Enfumo: All ancient birds had rigid skulls like dinosaurs.

Amazima: Janavis had a flexible skull like modern chickens and ducks, showing that movable skulls evolved early.1

Eri abakugu mu dayinoso

Erinnya lya ssaayansi: Janavis
Yatuumibwa: Benito et al. 20223
Ekibinja: Ebinyonyi eby'olubereberye
Ekika / ekibinja: Ichthyornithes3
Engabanya: Theropoda > Avialae3
Emyaka gy'enjazi: emyaka obukadde 72 okutuuka ku 66 (Maastrichtian)3
Ensengeka z'enjazi: Maastricht3
Ensi: Bubirigi3
Ebisigalira ebyazuulibwa: 1 mu The Paleobiology Database3
Okuzuulibwa: The fossil was collected in 2000 by amateur palaeontologist Rudi Dortangs in Belgium. It was first reported in 2002, and in 2022 scientists named it Janavis finalidens after CT scans revealed its true identity.1
Kikyakubaganyizibwako ebirowoozo: Scientists debate whether Janavis could fly as well as modern birds, because its wing bones were very air-filled but its shoulder blade lacked a normal hook.1

Ebituufu gye biva

Janavis (en.wikipedia.org)
Bird beak evolved before dinosaur extinction | University of Cambridge (cam.ac.uk)
Janavis in The Paleobiology Database (CC BY 4.0): emyaka, ebifo, ensengeka z'enjazi, engabanya.

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