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Irritator

Hiika maqaa: “the irritator, named for the irritation paleontologists felt when they saw the fossil had been damaged”1

Kan nyaate: FoonIspaayinoosarootaKireetaashasii Jalqabaa

Irritator was a meat-eating dinosaur with a long, narrow snout and a small crest on its head. It lived in what is now Brazil about 110 million years ago. It is one of the smallest spinosaurs known.1

Kan jiraate

waggaa miliyoona 120 hanga 113 dura3

Kireetaashasii Jalqabaa

Fosiliiwwan kan itti argaman

Brazil, in the Romualdo Formation of the Araripe Basin1 3

Dheerina

6 hanga 8 m (20 hanga 26 ft)1

Ulfaatina

1 toonii (2,200 lb)1

Ol-dheerina

2 m (6.6 ft)1

Saffisa ol'aanaa

gara 29 km/sa'a (18 mph)

Fiiguu, tilmaama

Yoom jiraate?

Tiraayaasikii

Juraasikii

Kireetaashasii

waggaa miliyoona 252 dura20114566, asteerooyidii

Hammam guddaa ture?

Hammam dheeraa ture?

Hammam ol-dheeraa ture?

Hammam ulfaataa ture?

akka saree 50 ulfaata

akka saree 8 funyaan hanga eegeetti dheeraaakka muuzii 44 walitti hiriiran dheeraaakka habxuu 200 ulfaataakka ijoollee KG 53 ulfaataakka ijoollee mana barumsaa 31 ulfaataakka beeraa adii 2 ulfaatameetira 100 sekondii 12 keessatti fiiguu danda'a (namni hunda caalaa saffisaan 9.6 barbaada)

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

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

Hammam saffisaa ture?

Nama miilaan deemu gara 5 km/sa'a (3 mph)

Daa'ima saayikilii irra jiru gara 12 km/sa'a (7 mph)

Irritator gara 29 km/sa'a (18 mph)

Farda gulufu gara 65 km/sa'a (40 mph)

Cheetaa gara 100 km/sa'a (62 mph)

wantoota bareedoo

Odeeffannoowwan bashannansiisoo

Irritator's skull is the most complete skull of any spinosaurid dinosaur ever found.1

Its name comes from the irritation scientists felt because fossil collectors had damaged and altered the skull before it was studied.1

A tooth from Irritator was found stuck in the neck bone of a pterosaur, showing that it ate pterosaurs, either by hunting or scavenging.1

Irritator had a thin crest on top of its head, and strong neck muscles were probably attached there.1

Its nostrils were positioned far back on its snout, not at the tip like in many other dinosaurs.1

Irritator lived in a coastal lagoon environment that was surrounded by dry areas.1

The fossil was originally thought to be from a pterosaur, then a maniraptoran dinosaur, before being identified as a spinosaurid in 1996.1

Fakkii AI'n hojjetame: Irritator — Fakkii AI'n hojjetame kan Irritator 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 Irritator baay'ee gaafataman

?How big was Irritator?

About 6 to 8 metres (20 to 26 feet) long and weighed around 1 tonne (1.1 short tons). It was one of the smallest spinosaurids.1

?What did Irritator eat?

It ate fish and other small animals, like today's crocodiles. A tooth was found stuck in a pterosaur neck bone, so it also ate pterosaurs, either by hunting or scavenging.1

?Why is it called Irritator?

Its name comes from the word 'irritation' because scientists were annoyed that fossil collectors had damaged and altered the skull before they could study it.1

?Did Irritator have feathers?

Nobody knows for sure. No fossil feathers have been found with Irritator, and most spinosaurids are not known to have had feathers.1

?Could Irritator swim?

It may have been semiaquatic, meaning it spent time in water. It lived in a coastal lagoon and probably hunted fish, like today's crocodiles.1

?Was Irritator bigger than T. rex?

No, it was much smaller. Irritator was about 6 to 8 metres long, while T. rex could be over 12 metres long.1

?Did Irritator have a sail on its back?

One possible skeleton suggests it had a sail, like other spinosaurids, but since only a skull has been found, the sail is a guess.2

?When did Irritator live?

It lived during the Early Cretaceous Period, about 113 to 110 million years ago.1

Seenaa sobaa diigaa

Seenaa sobaa: Some people think Irritator was a fully aquatic dinosaur that only ate fish.

Dhugaa: Scientists think Irritator was a generalist eater, catching fish and other small prey, and it may have also scavenged. It probably lived both on land and in water.1

Ogeeyyii daayinootiif

Maqaa saayinsii: Irritator
Kan maqaa baase: Martill et al. 19963
Garee: Ispaayinoosaroota
Maatii / kilaadii: Spinosauridae3
Ramaddii: Theropoda > Spinosauridae3
Umurii dhagaawwanii: waggaa miliyoona 120 hanga 113 (Aptian)3
Caasaawwan dhagaa: Romualdo3
Biyyoota: Biraazil3
Galmee fosilii: 1 The Paleobiology Database keessa3
Argannoo: The skull was found by fossil dealers in Brazil and sold to a museum in Germany. It was described by Martill and colleagues in 1996, and the species was named Irritator challengeri.1 3
Ammallee falmisiisaa: Scientists are still unsure whether Irritator actively hunted pterosaurs or just ate their remains.1

Odeeffannoon eessaa dhufa

Irritator (en.wikipedia.org)
Irritator | Natural History Museum (nhm.ac.uk)
Irritator in The Paleobiology Database (CC BY 4.0): umurii, bakkeewwan, caasaawwan dhagaa, ramaddii.

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