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Ikhadi ledayinaso No. 0900 kwe-2 027

Janavis

Igama lithetha: “Janus bird, after the Roman god of beginnings and endings”1

Yayitya: InyamaIintaka zokuqalaiCretaceous yamva

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

Yaphila

72 ukuya ku-66 izigidi zeminyaka eyadlulayo3

iCretaceous yamva

Iifosili zifunyenwe:

Eben Emael, Belgium1

Ububanzi bamaphiko

1.5 m (4.9 ft)1

Ubunzima

1.12 kg ukuya ku-1.604 kg (2 ukuya ku-4 lb)1

Esona santya siphezulu

malunga ne-42 km/h (26 mph)

Ukubhabha, uqikelelo

Yaphila nini?

iTriassic

iJurassic

iCretaceous

Izigidi ezingama-252 zeminyaka eyadlulayo20114566, i-asteroyidi

Yayinkulu kangakanani?

Amaphiko ayo ayebanzi kangakanani?

Yayinzima kangakanani?

inzima njengeebhanana ezingama-13

inde njengeekati zasekhaya ezingama-3, impumlo ukuya emsileniilula kunekati yasekhayainzima njengeebhanana ezingama-13ibinokubhabha inqumle ibala lebhola ekhatywayo lonke ngemizuzwana engama-9

Janavis wayemkhulu kangakanani xa ethelekiswa NAWE?

Yimathematika nje kwibhrawuza yakho. Akukho nto igcinwayo okanye ithunyelwe naphi na.

Yayikhawuleza kangakanani?

Umntu ohambayo malunga ne-5 km/h (3 mph)

Umntwana ekhwele ibhayisikile malunga ne-12 km/h (7 mph)

Janavis malunga ne-42 km/h (26 mph)

Ihashe elibaleka ngamandla malunga ne-65 km/h (40 mph)

Ingwenkala malunga ne-100 km/h (62 mph)

izinto ezimnandi

Iinyani ezimnandi

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

Umfanekiso owenziwe yi-AI: Janavis — Umfanekiso owenziwe yi-AI obonisa indlela Janavis esenokuba wayekhangeleka ngayo, wenziwe yikhompyutha ngokwento eyaziwa zizazinzulu. Kukuqikelela nje: esona silwanyana sinokuba sasikhangeleka ngenye indlela, kwaye akukho mntu waziyo imibala yaso yokwenyani.

ubuzile

Eyona mibuzo ibuzwa kakhulu: 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

Inyaniso ngeentsomi

Intsomi: All ancient birds had rigid skulls like dinosaurs.

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

Kwiingcali zeedayinaso

Igama lenzululwazi: Janavis
Inikwe igama ngu:: Benito et al. 20223
Iqela: Iintaka zokuqala
Usapho / iclade: Ichthyornithes3
Ukuhlelwa: Theropoda > Avialae3
Ubudala bamatye: 72 ukuya ku-66 izigidi zeminyaka (Maastrichtian)3
Izakhiwo zamatye: Maastricht3
Amazwe: iBhelgiyam3
Iirekhodi zeefosili: 1 kwi-Paleobiology Database3
Ukufunyanwa: 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
Kusaxoxwa ngayo: 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

Apho iinyani zivela khona

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): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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