Irritator
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
Yabayeho ryari?
Yanganaga ite?
Yari ndende ite?
Ubutumburuke bwayo bwanganaga iki?
Yari iremereye ite?
ndende nk'imbwa 8 zikurikiranye๐ndende nk'imineke 44 ikurikiranye๐iremereye nk'imbuto 200 za watermelon๐งธiremereye nk'abana 53 bo mu ishuri ry'incuke๐iremereye nk'abanyeshuri 31๐ปโโ๏ธiremereye nk'idubu 2 zo mu rubura๐yashoboraga kwiruka metero 100 mu masegonda 12 (umuntu wihuta kurusha abandi akenera 9,6)Irritator yanganaga ite ugereranyije NAWE?
Ni imibare gusa ibarirwa muri mushakisha yawe. Nta kintu kibikwa cyangwa cyoherezwa ahandi.
Yihutaga ite?
Utuntu dushimishije
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

Ibibazo bibazwa cyane kuri Irritator
?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
Gusenya ibinyoma
Ibivugwa: Some people think Irritator was a fully aquatic dinosaur that only ate fish.
Ukuri: 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
Ku bazobereye muri dinozore
- Izina rya siyansi
- Irritator
- Yiswe na
- Martill et al. 19963
- Itsinda
- Spinozore
- Umuryango / ishami
- Spinosauridae3
- Ishyirwa mu byiciro
- Theropoda > Spinosauridae3
- Imyaka y'amabuye
- imyaka miliyoni 120 kugeza 113 (Aptian)3
- Inzego z'amabuye
- Romualdo3
- Ibihugu
- Burezili3
- Ibisigazwa byanditswe
- 1 muri The Paleobiology Database3
- Ivumburwa
- 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.13
- Biracyagibwaho impaka
- Scientists are still unsure whether Irritator actively hunted pterosaurs or just ate their remains.1
Aho amakuru yakuwe
- Irritator (en.wikipedia.org)
- Irritator | Natural History Museum (nhm.ac.uk)
- Irritator in The Paleobiology Database (CC BY 4.0): imyaka, ahantu, inzego z'amabuye, ishyirwa mu byiciro.
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