Dinokaart nr. 0900 van 2 027

Janavis

Naam beteken: “Janus bird, after the Roman god of beginnings and endings”1

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

Het geleef

72 tot 66 miljoen jaar gelede3

Laat Kryt

Fossiele gevind in

Eben Emael, Belgium1

Vlerkspan

1,5 m (4,9 ft)1

Gewig

1,12 kg tot 1,604 kg (2 tot 4 lb)1

Topspoed

omtrent 42 km/h (26 mph)

Vlieënd, skatting

Wanneer het dit geleef?

Trias

Jura

Kryt

252 miljoen jaar gelede20114566, die asteroïde

Hoe groot was dit?

Hoe wyd was sy vlerke?

Hoe swaar was dit?

so swaar soos 13 piesangs

so lank soos 3 huiskatte van neus tot stertligter as 'n huiskatso swaar soos 13 piesangskon in 9 sekondes oor 'n hele sokkerveld vlieg

Hoe groot was Janavis vergeleke met JOU?

Net wiskunde in jou blaaier. Niks word gestoor of êrens heen gestuur nie.

Hoe vinnig was dit?

'n Mens wat loop omtrent 5 km/h (3 mph)

'n Kind op 'n fiets omtrent 12 km/h (7 mph)

Janavis omtrent 42 km/h (26 mph)

'n Galopperende perd omtrent 65 km/h (40 mph)

'n Jagluiperd omtrent 100 km/h (62 mph)

cool goed

Prettige feite

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

KI-prent van Janavis — 'n KI-prent van hoe Janavis dalk gelyk het, deur 'n rekenaar gemaak uit wat wetenskaplikes weet. Dit is 'n raaiskoot: die regte dier het dalk anders gelyk, en niemand weet wat sy regte kleure was nie.

julle het gevra

Mees gevraagde vrae oor 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

Mite-breker

Mite: All ancient birds had rigid skulls like dinosaurs.

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

Vir dino-kenners

Wetenskaplike naam: Janavis
Benoem deur: Benito et al. 20223
Groep: Vroeë voëls
Familie / klade: Ichthyornithes3
Klassifikasie: Theropoda > Avialae3
Ouderdom van die rotse: 72 tot 66 miljoen jaar (Maastrichtian)3
Rotsformasies: Maastricht3
Lande: België3
Fossielrekords: 1 in The Paleobiology Database3
Ontdekking: 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
Steeds omstrede: 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

Waar die feite vandaan kom

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): ouderdom, plekke, rotsformasies, klassifikasie.

Elke feit op hierdie bladsy het 'n nommer wat na sy bron wys. As ons iets verkeerd het, jammer, ons is dino-aanhangers, nie 'n wetenskapjoernaal nie. Laat weet ons by [email protected] en ons maak dit reg.

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