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
Berɛ bɛn na ɛtenaa ase?
Na ne kɛseɛ yɛ sɛn?
Na ne tenten yɛ sɛn?
Na ne korɔn yɛ sɛn?
Na ne mu yɛ duru sɛn?
ne tenten te sɛ nkraman 8 firi hwene kɔsi dua🍌ne tenten te sɛ kwadu 44 a wɔde abɔ toatoa so🍉ne mu duru te sɛ watamɛlɔn 200🧸ne mu duru te sɛ nkɔkɔaa sukuu mmofra 53🎒ne mu duru te sɛ sukuu mmofra 31🐻❄️ne mu duru te sɛ polar bea 2🏃anka ɔbɛtumi atu mmirika mita 100 wɔ sikɛn 12 mu (onipa a ɔyɛ ntɛm sen biara hia 9.6)Irritator kɛseɛ yɛ sɛn sɛ wode toto WO ho a?
Akontaa nko ara wɔ wo browser mu. Yɛnkora biribiara so, na yɛmmfa biribiara nkɔ baabiara.
Na ɛyɛ ntɛm sɛn?
Nsɛm a ɛyɛ anigye
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

Nsɛm a wɔbisa bebree fa Irritator ho
?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
Atosɛm sɛefoɔ
Atosɛm: Some people think Irritator was a fully aquatic dinosaur that only ate fish.
Nokorɛ: 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
Ma dino ho animdefoɔ
- Nyansahu din
- Irritator
- Obi a ɔtoo din
- Martill et al. 19963
- Kuo
- Spinosɔɔ
- Abusua / kuo kɛseɛ
- Spinosauridae3
- Nkyekyɛmu
- Theropoda > Spinosauridae3
- Abotan no mfeɛ
- mfeɛ ɔpepem 120 kɔsi 113 (Aptian)3
- Abotan nhyehyɛeɛ
- Romualdo3
- Aman
- Brazil3
- Fɔsil nkyerɛwee
- 1 wɔ The Paleobiology Database mu3
- Nhunumu
- 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
- Wɔda so gye ho akyinnye
- Scientists are still unsure whether Irritator actively hunted pterosaurs or just ate their remains.1
Baabi a nsɛm no firi
- Irritator (en.wikipedia.org)
- Irritator | Natural History Museum (nhm.ac.uk)
- Irritator in The Paleobiology Database (CC BY 4.0): mfeɛ, mmeaeɛ, abotan nhyehyɛeɛ, nkyekyɛmu.
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