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Kaartuunii: Acristavus
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Acristavus

Hiika maqaa: “crestless grandfather”1
Kan nyaate: BiqiltootaAfaan-daakiyyeeKireetaashasii Dhumaa

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

Kan jiraate
waggaa miliyoona 84 hanga 72 dura5
Kireetaashasii Dhumaa
Fosiliiwwan kan itti argaman
Montana and Utah, USA5
Dheerina
8 hanga 9 m (26 hanga 30 ft)1
Ulfaatina
2 toonii hanga 3 toonii (4,400 hanga 6,600 lb)1
Ol-dheerina
2.5 hanga 3 m (8.2 hanga 9.8 ft)1
Saffisa ol'aanaa
gara 26 km/sa'a (16 mph)
Fiiguu, tilmaama

Yoom jiraate?

Tiraayaasikii
Juraasikii
Kireetaashasii
waggaa miliyoona 252 dura20114566, asteerooyidii

Hammam guddaa ture?

Hammam dheeraa ture?

Acristavus gara 9 m dheeraa (30 ft)Saayikilii nama guddaa gara 1.8 m (5.9 ft)Konkolaataa gara 4.5 m (15 ft)Arba, bineensa lafa irraa isa har'a hunda caalaa guddaa gara 6.5 m (21 ft)

Hammam ol-dheeraa ture?

Sareegara 0.5 m (1.6 ft)Fardagara 1.6 m (5.2 ft)Acristavusgara 3 m ol-dheeraa (9.8 ft)Arbagara 3.2 m (10 ft)

Hammam ulfaataa ture?

akka konkolaataa 2 ulfaata
akka konkolaataa 2 tarreen dhaabatan dheeraaakka muuzii 50 walitti hiriiran dheeraaakka saree 150 ulfaataakka habxuu 600 ulfaataakka kutaalee mana barumsaa guutuu 4 ulfaataakka beeraa adii 7 ulfaatameetira 100 sekondii 14 keessatti fiiguu danda'a (namni hunda caalaa saffisaan 9.6 barbaada)

SI wajjin yoo wal bira qabamu, Acristavus hammam guddaa ture?

Herrega qofa barbaadduu kee keessatti. Wanti tokkollee hin olkaa'amu, eessayyuu hin ergamu.

Hammam saffisaa ture?

wantoota bareedoo

Odeeffannoowwan bashannansiisoo

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

AI'n kan hojjetameFakkii AI'n hojjetame: Acristavus
Fakkii AI'n hojjetame kan Acristavus maal fakkaachuu akka danda'u agarsiisu, kompiitaraan beekumsa saayintistootaa irratti hundaa'uun hojjetame. Tilmaama qofa: bineensi dhugaa adda ta'ee mul'achuu danda'a, halluu isaa dhugaa immoo namni beeku hin jiru.
ati gaafatte

Gaaffiiwwan waa'ee Acristavus baay'ee gaafataman

?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

Ogeeyyii daayinootiif

Maqaa saayinsii
Acristavus
Kan maqaa baase
Gates et al. 20115
Garee
Afaan-daakiyyee
Maatii / kilaadii
Hadrosauridae5
Ramaddii
Ornithischia > Ornithopoda > Iguanodontia > Hadrosauridae5
Umurii dhagaawwanii
waggaa miliyoona 84 hanga 72 (Campanian)5
Caasaawwan dhagaa
Two Medicine, Wahweap5
Biyyoota
Ameerikaa5
Galmee fosilii
2 The Paleobiology Database keessa5
Argannoo
Acristavus was named by Terry A. Gates, Jack Horner, and colleagues in 2011. The first fossils were found in Montana and Utah.1
Ammallee falmisiisaa
Scientists are not sure why Acristavus lacked a head crest while many other duck-billed dinosaurs had one.1

Odeeffannoon eessaa dhufa

  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): umurii, bakkeewwan, caasaawwan dhagaa, ramaddii.

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Garee sana irraa kan biroo: Afaan-daakiyyee

ParasaurolophusAfaan-daakiyyeeEdmontosaurusAfaan-daakiyyeeSaurolophusAfaan-daakiyyeeHypacrosaurusAfaan-daakiyyeeCorythosaurusAfaan-daakiyyeeKritosaurusAfaan-daakiyyee

Ammas yeroo sana irraa: Kireetaashasii Dhumaa

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Rex soorisanduuqa gumaachaa ga'eessotaaf