Carta da dino nr. 0882 da 2 027

Irritator

Il num vul dir: “the irritator, named for the irritation paleontologists felt when they saw the fossil had been damaged”1

Mangiava: CharnSpinosaursCretacic tempriv

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

Viveva

avant 120 fin 113 milliuns onns3

Cretacic tempriv

Fossils chattads en

Brazil, in the Romualdo Formation of the Araripe Basin1 3

Lunghezza

6 fin 8 m (20 fin 26 ft)1

Paisa

1 tonnas (2 200 lb)1

Autezza

2 m (6,6 ft)1

Spertadad maximala

var 29 km/h (18 mph)

Currer, stima

Cura viveva el?

Triassic

Giurassic

Cretacic

avant 252 milliuns onns20114566, l'asteroid

Quant grond era el?

Quant lung era el?

Quant aut era el?

Quant grev era el?

uschè grev sco 50 chauns

uschè lung sco 8 chauns dal nas a la cuauschè lung sco 44 bananas ina suenter l'autrauschè grev sco 200 melunasuschè grev sco 53 uffants da scolettauschè grev sco 31 scolarsuschè grev sco 2 urs polarspudess currer 100 meters en 12 secundas (il pli spert uman dovra 9,6)

Quant grond era Irritator cumpareglià cun TAI?

Mo matematica en tes navigatur. Nagut na vegn arcunà u tramess.

Quant spert era el?

Ina persuna che va a pe var 5 km/h (3 mph)

In uffant sin il velo var 12 km/h (7 mph)

Irritator var 29 km/h (18 mph)

In chaval che galoppescha var 65 km/h (40 mph)

In gepard var 100 km/h (62 mph)

chaussas cool

Fatgs divertents

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

Maletg da Irritator fatg cun IA — In maletg fatg cun IA che mussa co Irritator pudess avair guardà ora, fatg d'in computer tenor quai che la scienza sa. I sa tracta d'ina supposiziun: l'animal vair ha forsa guardà ora auter, e sias colurs vairas èn nunenconuschentas.

tias dumondas

Las dumondas las pli frequentas davart 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

Chatschader da mitus

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

Vardad: 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

Per experts da dinos

Num scientific: Irritator
Numnà da: Martill et al. 19963
Gruppa: Spinosaurs
Famiglia / clada: Spinosauridae3
Classificaziun: Theropoda > Spinosauridae3
Vegliadetgna da la crappa: 120 fin 113 milliuns onns (Aptian)3
Formaziuns da crap: Romualdo3
Pajais: Brasilia3
Chats da fossils: 1 en The Paleobiology Database3
Scuverta: 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
Anc discutà: Scientists are still unsure whether Irritator actively hunted pterosaurs or just ate their remains.1

Danunder che vegnan ils fatgs

Irritator (en.wikipedia.org)
Irritator | Natural History Museum (nhm.ac.uk)
Irritator in The Paleobiology Database (CC BY 4.0): vegliadetgna, lieus, formaziuns da crap, classificaziun.

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