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Spotprent van Acristavus
Dinokaart nr. 0019 van 2 027

Acristavus

Naam beteken: “crestless grandfather”1
Het geëet: PlanteEendbekkeLaat Kryt

Acristavus was a duck-billed dinosaur that lived about 80 million years ago. It had no crest on its head, which is unusual for its family. This plant-eater walked on two legs and could also move on all fours.12

Het geleef
84 tot 72 miljoen jaar gelede5
Laat Kryt
Fossiele gevind in
Montana and Utah, USA5
Lengte
8 tot 9 m (26 tot 30 ft)1
Gewig
2 ton tot 3 ton (4 400 tot 6 600 lb)1
Hoogte
2,5 tot 3 m (8,2 tot 9,8 ft)1
Topspoed
omtrent 26 km/h (16 mph)
Hardloop, skatting

Wanneer het dit geleef?

Trias
Jura
Kryt
252 miljoen jaar gelede20114566, die asteroïde

Hoe groot was dit?

Hoe lank was dit?

Acristavus omtrent 9 m lank (30 ft)'n Grootmensfiets omtrent 1,8 m (5,9 ft)'n Motor omtrent 4,5 m (15 ft)'n Olifant, die grootste landdier vandag omtrent 6,5 m (21 ft)

Hoe hoog was dit?

'n Hondomtrent 0,5 m (1,6 ft)'n Perdomtrent 1,6 m (5,2 ft)Acristavusomtrent 3 m hoog (9,8 ft)'n Olifantomtrent 3,2 m (10 ft)

Hoe swaar was dit?

so swaar soos 2 motors
so lank soos 2 motors in 'n ry geparkeerso lank soos 50 piesangs punt aan puntso swaar soos 150 hondeso swaar soos 600 waatlemoeneso swaar soos 4 hele skoolklasse vol kindersso swaar soos 7 ysberekon 100 meter in 14 sekondes hardloop (die vinnigste mens het 9,6 nodig)

Hoe groot was Acristavus vergeleke met JOU?

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

Hoe vinnig was dit?

cool goed

Prettige feite

1

Acristavus means 'crestless grandfather' because it is one of the oldest known duck-billed dinosaurs without a head crest.1

2

Its fossils were found in the Two Medicine Formation of Montana and the Wahweap Formation of Utah.5

3

Acristavus lived during the Campanian stage of the Late Cretaceous, about 83 to 72 million years ago.1

4

It belonged to a group called Brachylophosaurini, which includes other duck-billed dinosaurs like Brachylophosaurus.1

5

The type specimen, named MOR 1155, is a partial skeleton that helped scientists identify this species.5

6

Acristavus was a ground-dwelling herbivore that laid eggs, like all duck-billed dinosaurs.2

Deur KI gemaakKI-prent van Acristavus
'n KI-prent van hoe Acristavus 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 Acristavus

?How big was Acristavus?

Scientists have not published a full size estimate yet, but as a hadrosaur it was probably around 8 to 9 metres (26 to 30 ft) long, about as long as a school bus.35

?Did Acristavus have a crest?

No. Acristavus is special because it had no crest or ornamentation on its skull, unlike most other duck-billed dinosaurs.34

?What did Acristavus eat?

Acristavus was a plant-eater (herbivore). It ate ferns, leaves and other plants that grew in its wet, seasonal habitat.53

?When did Acristavus live?

Acristavus lived about 79 to 81 million years ago, during the Campanian stage of the Late Cretaceous.35

Vir dino-kenners

Wetenskaplike naam
Acristavus
Benoem deur
Gates et al. 20115
Groep
Eendbekke
Familie / klade
Hadrosauridae5
Klassifikasie
Ornithischia > Ornithopoda > Iguanodontia > Hadrosauridae5
Ouderdom van die rotse
84 tot 72 miljoen jaar (Campanian)5
Rotsformasies
Two Medicine, Wahweap5
Lande
VSA5
Fossielrekords
2 in The Paleobiology Database5
Ontdekking
Acristavus was named by Terry A. Gates, Jack Horner, and colleagues in 2011. The first fossils were found in Montana and Utah.1
Steeds omstrede
Scientists are not sure why Acristavus lacked a head crest while many other duck-billed dinosaurs had one.1

Waar die feite vandaan kom

  1. PBDB Taxon (paleobiodb.org)
  2. Acristavus Gates et al. 2011 - Encyclopedia of Life (eol.org)
  3. Acristavus (Wikipedia) (Wikipedia)
  4. Acristavus: North America’s New Hadrosaur (smithsonianmag.com)
  5. Acristavus in The Paleobiology Database (CC BY 4.0): ouderdom, plekke, rotsformasies, klassifikasie.

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Meer uit dieselfde groep: Eendbekke

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Ook uit dieselfde tyd: Laat Kryt

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