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Chithunzi choseketsa cha Acristavus
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Acristavus

Dzina limatanthauza: “crestless grandfather”1
Ankadya: ZomeraMilomo ya bakhaKumapeto kwa Kretase

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

Ankakhala
zaka 84 mpaka 72 miliyoni zapitazo5
Kumapeto kwa Kretase
Mafosili apezeka ku
Montana and Utah, USA5
Utali
8 mpaka 9 m (26 mpaka 30 ft)1
Kulemera
matani 2 mpaka matani 3 (4,400 mpaka 6,600 lb)1
Msinkhu
2.5 mpaka 3 m (8.2 mpaka 9.8 ft)1
Liwiro lalikulu kwambiri
pafupifupi 26 km/h (16 mph)
Kuthamanga, kuyerekeza

Ankakhala liti?

Triasiki
Jurasiki
Kretase
Zaka 252 miliyoni zapitazo20114566, asteroidi

Anali wamkulu bwanji?

Anali wautali bwanji?

Acristavus utali wa pafupifupi 9 m (30 ft)Njinga ya munthu wamkulu pafupifupi 1.8 m (5.9 ft)Galimoto pafupifupi 4.5 m (15 ft)Njovu, nyama yaikulu kwambiri pamtunda masiku ano pafupifupi 6.5 m (21 ft)

Msinkhu wake unali wautali bwanji?

Galupafupifupi 0.5 m (1.6 ft)Hatchipafupifupi 1.6 m (5.2 ft)Acristavusmsinkhu wa pafupifupi 3 m (9.8 ft)Njovupafupifupi 3.2 m (10 ft)

Ankalemera bwanji?

wolemera ngati magalimoto 2
wautali ngati magalimoto 2 oimikidwa pamzerewautali ngati nthochi 50 zotsatizanawolemera ngati agalu 150wolemera ngati mavwende 600wolemera ngati makalasi athunthu a ana a sukulu 4wolemera ngati zimbalangondo zoyera 7akanatha kuthamanga mamita 100 m'masekondi 14 (munthu waliwiro kwambiri amafunika 9.6)

Acristavus anali wamkulu bwanji poyerekeza ndi IWEYO?

Ndi masamu chabe mu msakatuli wako. Palibe chimene chimasungidwa kapena kutumizidwa kwina kulikonse.

Anali ndi liwiro lotani?

zinthu zosangalatsa

Mfundo zosangalatsa

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

Chopangidwa ndi AIChithunzi cha Acristavus chopangidwa ndi AI
Chithunzi cha momwe Acristavus mwina ankaonekera, chopangidwa ndi kompyuta kuchokera pa zomwe asayansi amadziwa. Ndi kungoyerekeza: nyama yeniyeniyo mwina inkaoneka mosiyana, ndipo palibe amene akudziwa mitundu yake yeniyeni.
mwafunsa

Mafunso ofunsidwa kwambiri okhudza 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

Kwa akatswiri a madino

Dzina la sayansi
Acristavus
Anapatsidwa dzina ndi
Gates et al. 20115
Gulu
Milomo ya bakha
Banja / kladi
Hadrosauridae5
Magawidwe a sayansi
Ornithischia > Ornithopoda > Iguanodontia > Hadrosauridae5
Zaka za miyala
zaka 84 mpaka 72 miliyoni (Campanian)5
Mapangidwe a miyala
Two Medicine, Wahweap5
Mayiko
Amereka5
Zolemba za mafosili
2 mu The Paleobiology Database5
Kupezeka
Acristavus was named by Terry A. Gates, Jack Horner, and colleagues in 2011. The first fossils were found in Montana and Utah.1
Akukambiranabe
Scientists are not sure why Acristavus lacked a head crest while many other duck-billed dinosaurs had one.1

Kumene mfundo zimachokera

  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): zaka, malo, mapangidwe a miyala, magawidwe a sayansi.

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Ena a gulu lomweli: Milomo ya bakha

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Enanso a nthawi yomweyo: Kumapeto kwa Kretase

TyrannosaurusMatiranosauriTriceratopsMadino a nyangaVelociraptorMaraputalaSpinosaurusMaspinosauriAnkylosaurusMadino a zishangoPteranodonZokwawa zouluka
Dyetsa Rexbokosi la mphatso la akuluakulu