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Katuni: Acristavus
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Acristavus

Zita rinoreva: “crestless grandfather”1
Raidya: MiriwoMiromo-yedhadhaCretaceous Yekupedzisira

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

Raivapo
makore mamiriyoni 84 kusvika 72 apfuura5
Cretaceous Yekupedzisira
Mafosiri akawanikwa:
Montana and Utah, USA5
Kureba
8 kusvika 9 m (26 kusvika 30 ft)1
Huremu
matani 2 kusvika matani 3 (4,400 kusvika 6,600 lb)1
Kukwirira
2.5 kusvika 3 m (8.2 kusvika 9.8 ft)1
Kumhanya kwepamusoro
kunenge 26 km/h (16 mph)
Kumhanya, fungidziro

Rairarama rini?

Triassic
Jurassic
Cretaceous
makore mamiriyoni 252 apfuura20114566, dombo guru rakabva mudenga

Raiva hombe sei?

Raiva refu zvakadii?

Acristavus kureba kunenge 9 m (30 ft)Bhasikoro remunhu mukuru kunenge 1.8 m (5.9 ft)Motokari kunenge 4.5 m (15 ft)Nzou, mhuka hombe kupfuura dzose dzepanyika nhasi kunenge 6.5 m (21 ft)

Raiva rakakwirira zvakadii?

Imbwakunenge 0.5 m (1.6 ft)Bhizakunenge 1.6 m (5.2 ft)Acristavuskukwirira kunenge 3 m (9.8 ft)Nzoukunenge 3.2 m (10 ft)

Rairema zvakadii?

kurema semotokari 2
kureba semotokari 2 dzakamiswa dzakatevedzanakureba semabhanana 50 akatevedzanakurema seimbwa 150kurema semanwiwa 600kurema semakirasi 4 akazara evana vechikorokurema semabere echando 7raigona kumhanya mamita 100 mumasekonzi 14 (munhu anomhanya kupfuura vose anoda 9.6)

Acristavus raiva hombe sei kana richienzaniswa NEWE?

Masvomhu chete mubrowser yako. Hapana chinochengetwa kana kutumirwa kupi zvako.

Raimhanya zvakadii?

zvinhu zvinonakidza

Zvinonakidza

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

Zvakagadzirwa neAIMufananidzo wakagadzirwa neAI: Acristavus
Mufananidzo wakagadzirwa neAI unoratidza kuti Acristavus ringangodai raitaridzika sei, wakagadzirwa nekombiyuta kubva pane zvinozivikanwa nemasayendisiti. Ifungidziro chete: mhuka chaiyo ingangodai yaitaridzika zvakasiyana, uye hapana anoziva mavara ayo chaiwo.
wakabvunza

Mibvunzo inonyanya kubvunzwa nezve 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

Zvevanyanzvi vemadhino

Zita resainzi
Acristavus
Akaripa zita:
Gates et al. 20115
Boka
Miromo-yedhadha
Mhuri / boka
Hadrosauridae5
Kurongwa kwemhuka
Ornithischia > Ornithopoda > Iguanodontia > Hadrosauridae5
Zera rematombo
makore mamiriyoni 84 kusvika 72 (Campanian)5
Mapoka ematombo
Two Medicine, Wahweap5
Nyika
Amerika5
Zvinyorwa zvemafosiri
2 mu The Paleobiology Database5
Kuwanikwa
Acristavus was named by Terry A. Gates, Jack Horner, and colleagues in 2011. The first fossils were found in Montana and Utah.1
Zvichiri kupokanwa
Scientists are not sure why Acristavus lacked a head crest while many other duck-billed dinosaurs had one.1

Kunobva chokwadi

  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): zera, nzvimbo, mapoka ematombo, kurongwa kwemhuka.

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Mamwe kubva muboka rimwe chete: Miromo-yedhadha

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Zvimwe zvenguva imwe chete: Cretaceous Yekupedzisira

TyrannosaurusMatiranosauroTriceratopsMadhino ane nyangaVelociraptorMaraputaSpinosaurusMaspinosauroAnkylosaurusMadhino ane nhovoPteranodonZvinokambaira zvinobhururuka
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