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Janavis

Din no ase: “Janus bird, after the Roman god of beginnings and endings”1

Ɔdii: NamNnomaa a wɔdii kanKretasias Awieeɛ

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

Ɔtenaa ase

mfeɛ ɔpepem 72 kɔsi 66 a atwam3

Kretasias Awieeɛ

Wɔhunuu fɔsil wɔ

Eben Emael, Belgium1

Ntaban trɛmu

1.5 m (4.9 ft)1

Mu duru

1.12 kg kɔsi 1.604 kg (2 kɔsi 4 lb)1

Ntɛmntɛm a ɛsen biara

bɛyɛ 42 km/h (26 mph)

Wimtuo, nsusuiɛ

Berɛ bɛn na ɛtenaa ase?

Triasik

Jurasik

Kretasias

mfeɛ ɔpepem 252 a atwam20114566, ɔsoro ɛboɔ no

Na ne kɛseɛ yɛ sɛn?

Na ne ntaban trɛ sɛn?

Na ne mu yɛ duru sɛn?

ne mu duru te sɛ kwadu 13

ne tenten te sɛ fie agyinamoa 3 firi hwene kɔsi duane mu yɛ hare sen fie agyinamoane mu duru te sɛ kwadu 13anka ɔbɛtumi atu atwa bɔɔlobɔ prama mũ wɔ sikɛn 9 mu

Janavis kɛseɛ yɛ sɛn sɛ wode toto WO ho a?

Akontaa nko ara wɔ wo browser mu. Yɛnkora biribiara so, na yɛmmfa biribiara nkɔ baabiara.

Na ɛyɛ ntɛm sɛn?

Onipa a ɔnante bɛyɛ 5 km/h (3 mph)

Abofra a ɔte sakre so bɛyɛ 12 km/h (7 mph)

Janavis bɛyɛ 42 km/h (26 mph)

Ɔpɔnkɔ a ɔretu mmirika bɛyɛ 65 km/h (40 mph)

Kyiita bɛyɛ 100 km/h (62 mph)

nneɛma a ɛyɛ fɛ

Nsɛm a ɛyɛ anigye

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

Yei yɛ Janavis mfonini a AI yɛeɛ, sɛdeɛ ebia na ɔteɛ. Kɔmputa na ɛyɛeɛ firi deɛ nyansahufoɔ nim mu. Ɛyɛ nsusuiɛ: ebia na aboa ankasa no nte saa, na obiara nnim ne kɔla ankasa.

wobisaeɛ

Nsɛm a wɔbisa bebree fa Janavis ho

?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

Atosɛm sɛefoɔ

Atosɛm: All ancient birds had rigid skulls like dinosaurs.

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

Ma dino ho animdefoɔ

Nyansahu din: Janavis
Obi a ɔtoo din: Benito et al. 20223
Kuo: Nnomaa a wɔdii kan
Abusua / kuo kɛseɛ: Ichthyornithes3
Nkyekyɛmu: Theropoda > Avialae3
Abotan no mfeɛ: mfeɛ ɔpepem 72 kɔsi 66 (Maastrichtian)3
Abotan nhyehyɛeɛ: Maastricht3
Aman: Bɛlgyium3
Fɔsil nkyerɛwee: 1 wɔ The Paleobiology Database mu3
Nhunumu: 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
Wɔda so gye ho akyinnye: 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

Baabi a nsɛm no firi

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): mfeɛ, mmeaeɛ, abotan nhyehyɛeɛ, nkyekyɛmu.

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