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Avisaurus

Izina risobanura: “bird lizard”1

Yaryaga: InyamaInyoni za mbereKiretase ya nyuma

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

Yabayeho

hashize imyaka miliyoni 72 kugeza 664

Kiretase ya nyuma

Ibisigazwa byabonetse muri

Montana and North Dakota, USA4 1

Uburemere

1,2 kg kugeza 1,7 kg (3 kugeza 4 lb)1

Umuvuduko wo hejuru

nka 36 km/h (22 mph)

Kuguruka, igereranya

Yabayeho ryari?

Triyasike

Jurasike

Kiretase

Hashize miliyoni 252 z'imyaka20114566, asiteroyide

Yanganaga ite?

Yari iremereye ite?

iremereye nk'imineke 14

yoroheje kurusha injangwe yo mu rugoiremereye nk'imineke 14yashoboraga kuguruka ikambuka ikibuga cyose cy'umupira w'amaguru mu masegonda 10

Avisaurus yanganaga ite ugereranyije NAWE?

Ni imibare gusa ibarirwa muri mushakisha yawe. Nta kintu kibikwa cyangwa cyoherezwa ahandi.

Yihutaga ite?

Umuntu ugenda n'amaguru nka 5 km/h (3 mph)

Umwana ku igare nka 12 km/h (7 mph)

Avisaurus nka 36 km/h (22 mph)

Ifarashi yiruka cyane nka 65 km/h (40 mph)

Ingwe yihuta cyane nka 100 km/h (62 mph)

utuntu twiza cyane

Utuntu dushimishije

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

Ishusho ya Avisaurus yakozwe na AI — Ishusho yakozwe na AI yerekana uko Avisaurus ishobora kuba yari isa, yakozwe na mudasobwa hashingiwe ku byo abahanga bazi. Ni ugukeka gusa: inyamaswa nyayo ishobora kuba yari isa ukundi, kandi nta muntu uzi amabara yayo nyayo.

wabajije

Ibibazo bibazwa cyane kuri Avisaurus

?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

Gusenya ibinyoma

Ibivugwa: Avisaurus was a dinosaur.

Ukuri: 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

Ku bazobereye muri dinozore

Izina rya siyansi: Avisaurus
Yiswe na: Brett-Surman and Paul 19854
Itsinda: Inyoni za mbere
Umuryango / ishami: Avisauridae4
Ishyirwa mu byiciro: Theropoda > Avialae4
Imyaka y'amabuye: imyaka miliyoni 72 kugeza 66 (Maastrichtian)4
Inzego z'amabuye: Hell Creek4
Ibihugu: Amerika4
Ibisigazwa byanditswe: 2 muri The Paleobiology Database4
Ivumburwa: 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
Biracyagibwaho impaka: Scientists are not sure exactly how Avisaurus used its claws, whether for hunting or climbing.1

Aho amakuru yakuwe

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): imyaka, ahantu, inzego z'amabuye, ishyirwa mu byiciro.

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