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Haolong

Il num vul dir: “spiny dragon”1

Mangiava: PlantasErbivors cun pichelCretacic tempriv

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

Viveva

avant 126 fin 121 milliuns onns4

Cretacic tempriv

Fossils chattads en

Yixian Formation, Liaoning Province, China1 2

Lunghezza

2,45 m (8 ft)1

Spertadad maximala

var 41 km/h (25 mph)

Currer, stima

Cura viveva el?

Triassic

Giurassic

Cretacic

avant 252 milliuns onns20114566, l'asteroid

Quant grond era el?

Quant lung era el?

uschè lung sco 5 giats da chasa dal nas a la cuauschè lung sco 14 bananas ina suenter l'autrapudess currer 100 meters en 8,8 secundas (il pli spert uman dovra 9,6)

Quant grond era Haolong 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)

Haolong var 41 km/h (25 mph)

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

In gepard var 100 km/h (62 mph)

chaussas cool

Fatgs divertents

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

Maletg da Haolong fatg cun IA — In maletg fatg cun IA che mussa co Haolong 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 Haolong

?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

Chatschader da mitus

Mitus: Haolong was a spiky dinosaur like a Stegosaurus.

Vardad: 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

Per experts da dinos

Num scientific: Haolong
Numnà da: Huang et al. 20264
Gruppa: Erbivors cun pichel
Famiglia / clada: Hadrosauroidea4
Classificaziun: Ornithischia > Ornithopoda > Iguanodontia4
Vegliadetgna da la crappa: 126 fin 121 milliuns onns (Barremian)4
Formaziuns da crap: Yixian4
Pajais: China4
Chats da fossils: 1 en The Paleobiology Database4
Scuverta: 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
Anc discutà: Scientists are not sure if adult Haolong also had spikes, because the only known fossil is a juvenile.1

Danunder che vegnan ils fatgs

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): vegliadetgna, lieus, formaziuns da crap, classificaziun.

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