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Haolong

Izenaren esanahia: “spiny dragon”1

Jaten zuen: LandareakLandarejale mokodunakBehe Kretazeoa

Haolong was a plant-eating dinosaur that walked on two legs and had a long tail. It had special spikes on its skin that looked a bit like porcupine quills, which might have scared away hungry predators.1 2

Bizi izan zen

Duela 126 eta 121 milioi urte artean4

Behe Kretazeoa

Fosilak hemen aurkitu dira:

Yixian Formation, Liaoning Province, China1 2

Luzera

2,45 m (8 ft)1

Abiadura maximoa

41 km/h inguru (25 mph)

Korrika egitea, kalkulua

Noiz bizi izan zen?

Triasikoa

Jurasikoa

Kretazeoa

Duela 252 milioi urte20114566, asteroidea

Zein handia zen?

Zein luzea zen?

5 etxeko katu bezain luze, sudurretik buztanerabata bestearen atzean jarritako 14 banana bezain luze100 metro 8,8 segundotan egin zitzakeen korrika (gizakirik azkarrenak 9,6 behar ditu)

Zein handia zen Haolong 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)

Haolong 41 km/h inguru (25 mph)

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

Gepardo bat 100 km/h inguru (62 mph)

gauza bikainak

Datu dibertigarriak

Haolong's skin had large overlapping scales on its tail and smaller bumpy scales around its neck and chest.2

The spikes on Haolong were hollow and made of keratin, the same stuff as your fingernails.2

Scientists could see the preserved nuclei of skin cells in Haolong's spikes under a microscope.2

Haolong's spikes were different from the feathers of meat-eating dinosaurs and the spines of modern lizards.1 2

The only known Haolong skeleton is nearly complete and still connected together, which is very rare.1 2

Haolong lived about 125 million years ago during the Early Cretaceous period.4 1

The spikes might have helped Haolong stay cool or feel its surroundings, not just defend itself.1 2

Haolong: AAk egindako irudia — Haolong 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

Haolong: gehien egindako galderak

?How big was Haolong?

About 2.45 metres (8 feet) long. That is about the size of a small motorcycle.1

?Did Haolong have feathers?

No. Its skin had scales and hollow spikes made of keratin, not feathers.1 2

?What did Haolong eat?

It was a plant-eater, so it ate leaves and other plants.3

?When did Haolong live?

About 125 million years ago, during the Early Cretaceous period.1

?Where was Haolong found?

In Liaoning Province, northeastern China, in the Yixian Formation.1

?Why did Haolong have spikes?

Mostly to scare away predators, like a porcupine. They might also have helped with cooling or sensing touch.1 2

Mito-hauslea

Mitoa: Haolong was a spiky dinosaur like a Stegosaurus.

Egia: Haolong's spikes were made of keratin and were hollow, not bony plates. They were more like porcupine quills than the plates of Stegosaurus.1 2

Dino adituentzat

Izen zientifikoa: Haolong
Izendatzailea:: Huang et al. 20264
Taldea: Landarejale mokodunak
Familia / klada: Hadrosauroidea4
Sailkapena: Ornithischia > Ornithopoda > Iguanodontia4
Arroken adina: 126 eta 121 milioi urte artean (Barremian)4
Arroka-formazioak: Yixian4
Herrialdeak: Txina4
Fosil-erregistroak: 1 The Paleobiology Database datu-basean4
Aurkikuntza: Haolong was named in 2026 by a team of scientists led by J. Huang. The name honors the famous Chinese paleontologist Dong Zhiming.1 4
Oraindik eztabaidagai: Scientists are not sure if adult Haolong also had spikes, because the only known fossil is a juvenile.1

Datuak nondik datozen

Haolong (en.wikipedia.org)
Cellular-level preservation of cutaneous spikes in an Early Cretaceous iguanodontian dinosaur | Nature Ecology & Evolution (nature.com)
A dinosaur with spikes exhibiting unprecedented properties discovered in China | CNRS (cnrs.fr)
Haolong in The Paleobiology Database (CC BY 4.0): adina, tokiak, arroka-formazioak, sailkapena.

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