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Zavacephale

Il num vul dir: “origin head”1

Mangiava: PlantasChaus a cuplaCretacic tempriv

Zavacephale was a small, dome-headed dinosaur that lived in what is now Mongolia. It had a thick, rounded skull like a helmet, and it probably used it for head-butting contests. It is one of the oldest and most complete dome-headed dinosaurs ever found.1 2

Viveva

avant 120 fin 100 milliuns onns5

Cretacic tempriv

Fossils chattads en

Khuren Dukh Formation, Dundgobi Province, Mongolia1 5

Lunghezza

1 m (3,3 ft)1

Paisa

5,85 kg (13 lb)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 grev era el?

uschè grev sco 1,5 giats da chasa

uschè lung sco 2 giats da chasa dal nas a la cuauschè lung sco 6 bananas ina suenter l'autravar uschè grev sco in giat da chasauschè grev sco 49 bananaspudess currer 100 meters en 12 secundas (il pli spert uman dovra 9,6)

Quant grond era Zavacephale 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)

Zavacephale 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

Zavacephale is the oldest known dome-headed dinosaur, living about 119 to 100 million years ago during the Early Cretaceous.1 2

Its skeleton is about 54% complete, making it the most complete pachycephalosaur ever found.1

It is the first pachycephalosaur to preserve hand bones and a mass of gastroliths (stomach stones).1 2

Unlike later dome-heads, Zavacephale's dome was made mostly of the frontal bone, with little help from the parietal bone.1

The tail of Zavacephale was covered in stiff tendons, but they did not form the 'caudal basket' seen in later pachycephalosaurs.1

The dome grew early in life, before the animal reached full size, which suggests it was important for social displays or head-butting even in young animals.2

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

?How big was Zavacephale?

About 1 metre long and weighed around 5.85 kilograms. That is about the size of a large domestic cat.1 3

?What did Zavacephale eat?

It was a plant-eater. It swallowed small stones called gastroliths to help grind up tough plants in its stomach.4 2

?Did Zavacephale have feathers?

The fossils don't show feathers, so scientists aren't sure. No feathers have been found on any pachycephalosaur.1

?Why did Zavacephale have a dome?

It probably used its thick, bony dome for head-butting contests with rivals, like rams do. The dome may also have been used for display to attract mates.4

?When did Zavacephale live?

It lived about 119 to 100 million years ago, during the Early Cretaceous Period. That makes it the oldest known dome-headed dinosaur.1

?Where was Zavacephale found?

Its fossil was discovered in the Gobi Desert of Mongolia, in the Khuren Dukh Formation.1 3

Chatschader da mitus

Mitus: Some people think all dome-headed dinosaurs used their domes for ramming each other like bighorn sheep.

Vardad: Scientists are not sure. Zavacephale's dome was well developed even in a young animal, so it might have been for showing off or fighting, but the exact use is still debated.2

Per experts da dinos

Num scientific: Zavacephale
Numnà da: Chinzorig et al. 20255
Gruppa: Chaus a cupla
Famiglia / clada: Pachycephalosauria5
Classificaziun: Ornithischia > Pachycephalosauria5
Vegliadetgna da la crappa: 120 fin 100 milliuns onns (Aptian / Albian)5
Formaziuns da crap: Khuren Dukh5
Pajais: Mongolia5
Chats da fossils: 1 en The Paleobiology Database5
Scuverta: The fossil was found in 2019 in the Khuren Dukh Formation of Mongolia, and it was formally named by Tsogtbaatar Chinzorig and colleagues in 2025.1 2
Anc discutà: Scientists are still debating how the dome was used, whether for head-butting, display, or something else.2

Danunder che vegnan ils fatgs

Zavacephale (en.wikipedia.org)
A domed pachycephalosaur from the early Cretaceous of Mongolia | Nature (nature.com)
Best fossil of a dome-headed dinosaur is unearthed in Mongolia | Reuters (reuters.com)
New dome-headed dinosaur species is the most complete pachycephalosaur ever found | Natural History Museum (nhm.ac.uk)
Zavacephale in The Paleobiology Database (CC BY 4.0): vegliadetgna, lieus, formaziuns da crap, classificaziun.

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