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Karata ya dino No. 0900 mo go 2 027

Janavis

Leina le raya: “Janus bird, after the Roman god of beginnings and endings”1

E jele: NamaDinonyane tsa ntlhaBofelo jwa Cretaceous

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

E tshetse

dimilione tsa dingwaga di le 72 go ya go 66 tse di fetileng3

Bofelo jwa Cretaceous

Difosili di fitlhetswe kwa

Eben Emael, Belgium1

Bophara jwa diphuka

1.5 m (4.9 ft)1

Bokete

1.12 kg go ya go 1.604 kg (2 go ya go 4 lb)1

Bonako jo bogolo

e ka nna 42 km/h (26 mph)

Go fofa, kakanyo

E tshetse leng?

Triassic

Jurassic

Cretaceous

dimilione tsa dingwaga di le 252 tse di fetileng20114566, asteroiti

E ne e le kgolo go le kae?

Diphuka tsa yona di ne di namegile go le kae?

E ne e le bokete go le kae?

bokete jaaka dibanana di le 13

telele jaaka dikatse tsa mo gae di le 3 go tswa kwa nkong go ya kwa mogatlengbofefo go feta katse ya mo gaebokete jaaka dibanana di le 13e ne e ka fofa go kgabaganya lebala lotlhe la kgwele ya dinao mo metsotswaneng e le 9

Janavis e ne e le kgolo go le kae fa e bapisiwa le WENA?

Ke dipalo fela mo sebatling sa gago. Ga go sepe se se bolokwang kgotsa se se romelwang gope.

E ne e le bonako go le kae?

Motho yo o tsamayang e ka nna 5 km/h (3 mph)

Ngwana mo baesekeleng e ka nna 12 km/h (7 mph)

Janavis e ka nna 42 km/h (26 mph)

Pitse e e sianang ka bonako e ka nna 65 km/h (40 mph)

Lengau e ka nna 100 km/h (62 mph)

dilo tse di monate

Dintlha tse di monate

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

Setshwantsho sa Janavis se se dirilweng ke AI — Setshwantsho se se dirilweng ke AI sa kafa Janavis e ka tswang e ne e lebega ka gone, se dirilwe ke khomputara go ya ka se borasaense ba se itseng. Ke kakanyo fela: phologolo ya nnete e ka tswa e ne e lebega ka tsela e sele, mme ga go ope yo o itseng mebala ya yona ya nnete.

o botsitse

Dipotso tse di botswang thata ka ga 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

Mothubi wa ditlhamane

Tlhamane: All ancient birds had rigid skulls like dinosaurs.

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

Ya baitseanape ba didino

Leina la saense: Janavis
Leina le neilwe ke: Benito et al. 20223
Setlhopha: Dinonyane tsa ntlha
Lelapa / clade: Ichthyornithes3
Thulaganyo: Theropoda > Avialae3
Bogolo jwa matlapa: 72 go ya go 66 dimilione tsa dingwaga (Maastrichtian)3
Dibopego tsa matlapa: Maastricht3
Dinaga: Belejiamo3
Direkoto tsa difosili: 1 mo The Paleobiology Database3
Go fitlhelwa: 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
Go sa ntse go ganetsanwa: 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

Kwa dintlha di tswang teng

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): dingwaga, mafelo, dibopego tsa matlapa, thulaganyo.

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