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Umfanekiso wekhathuni: Acristavus
Ikhadi ledayinaso No. 0019 kwe-2 027

Acristavus

Igama lithetha: “crestless grandfather”1
Yayitya: IzityaloImilomo-dadaiCretaceous yamva

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

Yaphila
84 ukuya ku-72 izigidi zeminyaka eyadlulayo5
iCretaceous yamva
Iifosili zifunyenwe:
Montana and Utah, USA5
Ubude
8 ukuya ku-9 m (26 ukuya ku-30 ft)1
Ubunzima
2 iitoni ukuya ku-3 iitoni (4,400 ukuya ku-6,600 lb)1
Ukuphakama
2.5 ukuya ku-3 m (8.2 ukuya ku-9.8 ft)1
Esona santya siphezulu
malunga ne-26 km/h (16 mph)
Ukubaleka, uqikelelo

Yaphila nini?

iTriassic
iJurassic
iCretaceous
Izigidi ezingama-252 zeminyaka eyadlulayo20114566, i-asteroyidi

Yayinkulu kangakanani?

Yayinde kangakanani?

Acristavus malunga ne-9 m ubude (30 ft)Ibhayisikile yomntu omdala malunga ne-1.8 m (5.9 ft)Imoto malunga ne-4.5 m (15 ft)Indlovu, esona silwanyana sikhulu emhlabeni namhlanje malunga ne-6.5 m (21 ft)

Yayiphakame kangakanani?

Injamalunga ne-0.5 m (1.6 ft)Ihashemalunga ne-1.6 m (5.2 ft)Acristavusmalunga ne-3 m ukuphakama (9.8 ft)Indlovumalunga ne-3.2 m (10 ft)

Yayinzima kangakanani?

inzima njengeemoto ezingama-2
inde njengeemoto ezingama-2 zipakwe zilandelelanainde njengeebhanana ezingama-50 zilandelelanainzima njengezinja ezingama-150inzima njengamavatala angama-600inzima njengamagumbi okufundela apheleleyo abantwana angama-4inzima njengeebhere ezimhlophe ezingama-7ibinokubaleka iimitha ezili-100 ngemizuzwana engama-14 (oyena mntu ukhawulezayo udinga i-9,6)

Acristavus wayemkhulu kangakanani xa ethelekiswa NAWE?

Yimathematika nje kwibhrawuza yakho. Akukho nto igcinwayo okanye ithunyelwe naphi na.

Yayikhawuleza kangakanani?

izinto ezimnandi

Iinyani ezimnandi

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

Yenziwe yi-AIUmfanekiso owenziwe yi-AI: Acristavus
Umfanekiso owenziwe yi-AI obonisa indlela Acristavus esenokuba wayekhangeleka ngayo, wenziwe yikhompyutha ngokwento eyaziwa zizazinzulu. Kukuqikelela nje: esona silwanyana sinokuba sasikhangeleka ngenye indlela, kwaye akukho mntu waziyo imibala yaso yokwenyani.
ubuzile

Eyona mibuzo ibuzwa kakhulu: 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

Kwiingcali zeedayinaso

Igama lenzululwazi
Acristavus
Inikwe igama ngu:
Gates et al. 20115
Iqela
Imilomo-dada
Usapho / iclade
Hadrosauridae5
Ukuhlelwa
Ornithischia > Ornithopoda > Iguanodontia > Hadrosauridae5
Ubudala bamatye
84 ukuya ku-72 izigidi zeminyaka (Campanian)5
Izakhiwo zamatye
Two Medicine, Wahweap5
Amazwe
iUSA5
Iirekhodi zeefosili
2 kwi-Paleobiology Database5
Ukufunyanwa
Acristavus was named by Terry A. Gates, Jack Horner, and colleagues in 2011. The first fossils were found in Montana and Utah.1
Kusaxoxwa ngayo
Scientists are not sure why Acristavus lacked a head crest while many other duck-billed dinosaurs had one.1

Apho iinyani zivela khona

  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): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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Ezinye ezivela kwiqela elinye: Imilomo-dada

ParasaurolophusImilomo-dadaEdmontosaurusImilomo-dadaSaurolophusImilomo-dadaHypacrosaurusImilomo-dadaCorythosaurusImilomo-dadaKritosaurusImilomo-dada

Nezinye ezivela kwixesha elinye: iCretaceous yamva

TyrannosaurusIityrannosauriTriceratopsIidayinaso ezineempondoVelociraptorIiraptaSpinosaurusIispinosauriAnkylosaurusIidayinaso ezinesikrweqePteranodonIzirhubuluzi ezibhabhayo
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