Dinokaart nr. 0215 van 2 027

Avisaurus

Naam beteken: “bird lizard”1

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

Het geleef

72 tot 66 miljoen jaar gelede4

Laat Kryt

Fossiele gevind in

Montana and North Dakota, USA4 1

Gewig

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

Topspoed

omtrent 36 km/h (22 mph)

Vlieënd, skatting

Wanneer het dit geleef?

Trias

Jura

Kryt

252 miljoen jaar gelede20114566, die asteroïde

Hoe groot was dit?

Hoe swaar was dit?

so swaar soos 14 piesangs

ligter as 'n huiskatso swaar soos 14 piesangskon in 10 sekondes oor 'n hele sokkerveld vlieg

Hoe groot was Avisaurus 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)

Avisaurus omtrent 36 km/h (22 mph)

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

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

cool goed

Prettige feite

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

KI-prent van Avisaurus — 'n KI-prent van hoe Avisaurus 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 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

Mite-breker

Mite: Avisaurus was a dinosaur.

Waarheid: 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

Vir dino-kenners

Wetenskaplike naam: Avisaurus
Benoem deur: Brett-Surman and Paul 19854
Groep: Vroeë voëls
Familie / klade: Avisauridae4
Klassifikasie: Theropoda > Avialae4
Ouderdom van die rotse: 72 tot 66 miljoen jaar (Maastrichtian)4
Rotsformasies: Hell Creek4
Lande: VSA4
Fossielrekords: 2 in The Paleobiology Database4
Ontdekking: 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
Steeds omstrede: Scientists are not sure exactly how Avisaurus used its claws, whether for hunting or climbing.1

Waar die feite vandaan kom

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): ouderdom, plekke, rotsformasies, klassifikasie.

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