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Avisaurus

Hiika maqaa: “bird lizard”1

Kan nyaate: FoonSimbirroota jalqabaaKireetaashasii Dhumaa

Avisaurus was a bird-like dinosaur that lived near the end of the age of dinosaurs. It was a fierce hunter with sharp claws, kind of like a tiny raptor. But it was actually an ancient bird, not a dinosaur!1

Kan jiraate

waggaa miliyoona 72 hanga 66 dura4

Kireetaashasii Dhumaa

Fosiliiwwan kan itti argaman

Montana and North Dakota, USA4 1

Ulfaatina

1.2 kg hanga 1.7 kg (3 hanga 4 lb)1

Saffisa ol'aanaa

gara 36 km/sa'a (22 mph)

Balali'uu, tilmaama

Yoom jiraate?

Tiraayaasikii

Juraasikii

Kireetaashasii

waggaa miliyoona 252 dura20114566, asteerooyidii

Hammam guddaa ture?

Hammam ulfaataa ture?

akka muuzii 14 ulfaata

adurree manaa caalaa salphaaakka muuzii 14 ulfaatadirree kubbaa miilaa guutuu sekondii 10 keessatti balali'ee ce'uu danda'a

SI wajjin yoo wal bira qabamu, Avisaurus hammam guddaa ture?

Herrega qofa barbaadduu kee keessatti. Wanti tokkollee hin olkaa'amu, eessayyuu hin ergamu.

Hammam saffisaa ture?

Nama miilaan deemu gara 5 km/sa'a (3 mph)

Daa'ima saayikilii irra jiru gara 12 km/sa'a (7 mph)

Avisaurus gara 36 km/sa'a (22 mph)

Farda gulufu gara 65 km/sa'a (40 mph)

Cheetaa gara 100 km/sa'a (62 mph)

wantoota bareedoo

Odeeffannoowwan bashannansiisoo

Avisaurus lived about 68 to 66 million years ago, right before the dinosaurs went extinct.1

It was one of the largest enantiornithine birds, weighing up to 1.7 kilograms (3.7 pounds).1

The first fossil of Avisaurus was a single foot bone called a tarsometatarsus, found in Montana in 1975.1

Scientists first thought Avisaurus was a non-avian dinosaur, but later realized it was an ancient bird.1

Avisaurus had curved claws on its feet, similar to those of raptor dinosaurs, which helped it catch prey.1

It lived in swamps and river basins along the western shore of a huge sea that split North America.1

Fakkii AI'n hojjetame: Avisaurus — Fakkii AI'n hojjetame kan Avisaurus maal fakkaachuu akka danda'u agarsiisu, kompiitaraan beekumsa saayintistootaa irratti hundaa'uun hojjetame. Tilmaama qofa: bineensi dhugaa adda ta'ee mul'achuu danda'a, halluu isaa dhugaa immoo namni beeku hin jiru.

ati gaafatte

Gaaffiiwwan waa'ee Avisaurus baay'ee gaafataman

?Was Avisaurus a dinosaur?

Yes, Avisaurus was a dinosaur. All birds are members of the dinosaur group, and Avisaurus was an enantiornithine bird.1

?How big was Avisaurus?

Avisaurus was a large enantiornithine bird. Avisaurus darwini weighed up to 1.2 kilograms (2.6 pounds), and Avisaurus archibaldi weighed up to 1.7 kilograms (3.7 pounds).1

?What did Avisaurus eat?

Avisaurus was a predator that likely ate other vertebrates. Its curved claws and foot bones suggest it could catch and carry prey, similar to modern hawks and owls.1 2

?When did Avisaurus live?

Avisaurus lived about 68 to 66 million years ago, during the Late Cretaceous period. It was one of the last enantiornithine birds before the non avian dinosaurs went extinct.1

?Where was Avisaurus found?

Avisaurus fossils have been found in the Hell Creek Formation of Montana, USA. The first fossil was a single foot bone collected in 1975 in Garfield County.1

?Could Avisaurus fly?

Yes, Avisaurus was a bird and could fly. Its foot bones show it was a skilled predator that could catch prey, similar to modern birds of prey.2 3

Seenaa sobaa diigaa

Seenaa sobaa: Avisaurus was a dinosaur.

Dhugaa: Avisaurus was actually an ancient bird, part of a group called enantiornithines. It was a bird-like dinosaur, but not a non-avian dinosaur.1

Ogeeyyii daayinootiif

Maqaa saayinsii: Avisaurus
Kan maqaa baase: Brett-Surman and Paul 19854
Garee: Simbirroota jalqabaa
Maatii / kilaadii: Avisauridae4
Ramaddii: Theropoda > Avialae4
Umurii dhagaawwanii: waggaa miliyoona 72 hanga 66 (Maastrichtian)4
Caasaawwan dhagaa: Hell Creek4
Biyyoota: Ameerikaa4
Galmee fosilii: 2 The Paleobiology Database keessa4
Argannoo: Avisaurus was named in 1985 by paleontologists Brett-Surman and Paul. The first fossil, a foot bone, was found in 1975 by J. David Archibald in the Hell Creek Formation of Montana.1 4
Ammallee falmisiisaa: Scientists are not sure exactly how Avisaurus used its claws, whether for hunting or climbing.1

Odeeffannoon eessaa dhufa

Avisaurus (en.wikipedia.org)
Predatory birds from the same fossil formation as SUE the T. rex - Field Museum (fieldmuseum.org)
New enantiornithine diversity in the Hell Creek Formation and the functional morphology of the avisaurid tarsometatarsus (pmc.ncbi.nlm.nih.gov)
Avisaurus in The Paleobiology Database (CC BY 4.0): umurii, bakkeewwan, caasaawwan dhagaa, ramaddii.

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