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Rajasaurus

Izenaren esanahia: “princely lizard”1

Jaten zuen: HaragiaDino haragijaleakGoi Kretazeoa

Rajasaurus was a meat-eating dinosaur that lived in India near the end of the Cretaceous Period. It had a single short horn on its forehead and used its strong neck and jaws to catch prey. This dinosaur was an ambush predator, hiding and then pouncing on its food.1

Bizi izan zen

Duela 72 eta 66 milioi urte artean4

Goi Kretazeoa

Fosilak hemen aurkitu dira:

Gujarat and Madhya Pradesh, India2 4

Luzera

6,6 m (22 ft)1 2

Pisua

4 tona (8 800 lb)2

Altuera

2,44 m (8 ft)3

Abiadura maximoa

25 km/h inguru (16 mph)

Korrika egitea, kalkulua

Noiz bizi izan zen?

Triasikoa

Jurasikoa

Kretazeoa

Duela 252 milioi urte20114566, asteroidea

Zein handia zen?

Zein luzea zen?

Zein altua zen?

Zein astuna zen?

2,5 auto bezain astun

7 txakur bezain luze, sudurretik buztanerabata bestearen atzean jarritako 37 banana bezain luze200 txakur bezain astun800 angurria bezain astunhaurrez betetako 5 ikasgela oso bezain astun9 hartz zuri bezain astun100 metro 14 segundotan egin zitzakeen korrika (gizakirik azkarrenak 9,6 behar ditu)

Zein handia zen Rajasaurus ZUREKIN alderatuta?

Zure nabigatzaileko kalkulu hutsak. Ez da ezer gordetzen ez inora bidaltzen.

Zein azkarra zen?

Pertsona bat oinez 5 km/h inguru (3 mph)

Haur bat bizikletan 12 km/h inguru (7 mph)

Rajasaurus 25 km/h inguru (16 mph)

Zaldi bat lauhazka 65 km/h inguru (40 mph)

Gepardo bat 100 km/h inguru (62 mph)

gauza bikainak

Datu dibertigarriak

Rajasaurus had a single low horn on its forehead made mostly of nasal bone, unlike the horn of its relative Majungasaurus.2

It was one of the larger abelisaurids, measuring about 6.6 metres (22 feet) long.1

Rajasaurus lived on the island of India during the Late Cretaceous, when India was isolated from other continents.1

Its fossils were found in the Lameta Formation, which was once a river valley with an arid or semi-arid climate.2

The horn on its head might have been used for display or for head-butting other Rajasaurus during fights.1 2

Rajasaurus had short arms and four fingers, so it relied on its powerful head and jaws to catch prey.2

It is the first Indian theropod dinosaur to have preserved bones from the spine, hips, legs, and tail.2

Rajasaurus: AAk egindako irudia — Rajasaurus nolakoa izan zitekeen erakusten duen AAk egindako irudia, ordenagailu batek zientzialariek dakitenetik sortua. Asmakizun bat da: benetako animalia desberdina izan zitekeen, eta inork ez daki zein ziren bere benetako koloreak.

zure galderak

Rajasaurus: gehien egindako galderak

?How big was Rajasaurus?

Rajasaurus was about 6.6 metres (22 feet) long, though one scientist estimated it at 11 metres (36 feet). It weighed around 4 metric tons (4.4 short tons).2 1

?What did Rajasaurus eat?

Rajasaurus was a carnivore that ate meat. It probably hunted large prey like sauropod dinosaurs and may have also scavenged for food.1 3

?Did Rajasaurus have feathers?

No one knows for sure. The fossils don't show feathers, and most abelisaurids are not known to have had them, but some scientists think many theropods might have had simple feathers.2 1

?Was Rajasaurus bigger than T. rex?

No, Rajasaurus was smaller. T. rex could reach about 12 metres (40 feet) long, while Rajasaurus was only about 6.6 metres (22 feet) long.1 2

?Why did Rajasaurus have a horn?

The horn was probably used for display to attract mates or for head-butting other Rajasaurus during fights. It was made mostly of nasal bone.1 2

?Could Rajasaurus swim?

Probably not. It was a land dinosaur with strong legs for walking and running, not swimming. It lived near rivers but likely stayed on land.2 1

?When did Rajasaurus live?

Rajasaurus lived during the Late Cretaceous period, about 72 to 66 million years ago, right before the dinosaurs went extinct.1 2

?What would happen if Rajasaurus was alive today?

It would be a large predator, but it would probably not survive well because its habitat and prey are gone. It might be kept in zoos or studied by scientists.1 2

Dino adituentzat

Izen zientifikoa: Rajasaurus
Izendatzailea:: Wilson et al. 20034
Taldea: Dino haragijaleak
Familia / klada: Abelisauridae4
Sailkapena: Theropoda > Ceratosauria > Abelisauridae4
Arroken adina: 72 eta 66 milioi urte artean (Maastrichtian)4
Arroka-formazioak: Lameta4
Herrialdeak: India4
Fosil-erregistroak: 1 The Paleobiology Database datu-basean4
Aurkikuntza: Rajasaurus was named in 2003 by Jeffrey A. Wilson and colleagues. The fossils were found in the Lameta Formation of Gujarat, India, after dinosaur eggs were discovered there in 1981.2 4
Oraindik eztabaidagai: Scientists are not sure what the horn on its head was used for. It may have been for display or for head-butting, but no one knows for certain.1

Datuak nondik datozen

Rajasaurus | Natural History Museum (nhm.ac.uk)
Rajasaurus (en.wikipedia.org)
Discoveries | Paul Sereno - Paleontologist | The University of Chicago (paulsereno.uchicago.edu)
Rajasaurus in The Paleobiology Database (CC BY 4.0): adina, tokiak, arroka-formazioak, sailkapena.

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