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Zavacephale
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.12
Yabayeho ryari?
Yanganaga ite?
Yari ndende ite?
Yari iremereye ite?
ndende nk'injangwe 2 zo mu rugo zikurikiranye🍌ndende nk'imineke 6 ikurikiranyeiremereye nk'injangwe yo mu rugo🍌iremereye nk'imineke 49🏃yashoboraga kwiruka metero 100 mu masegonda 12 (umuntu wihuta kurusha abandi akenera 9,6)Zavacephale yanganaga ite ugereranyije NAWE?
Ni imibare gusa ibarirwa muri mushakisha yawe. Nta kintu kibikwa cyangwa cyoherezwa ahandi.
Yihutaga ite?
Utuntu dushimishije
Zavacephale is the oldest known dome-headed dinosaur, living about 119 to 100 million years ago during the Early Cretaceous.12
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).12
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
Ibibazo bibazwa cyane kuri 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.13
?What did Zavacephale eat?
It was a plant-eater. It swallowed small stones called gastroliths to help grind up tough plants in its stomach.42
?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
Gusenya ibinyoma
Ibivugwa: Some people think all dome-headed dinosaurs used their domes for ramming each other like bighorn sheep.
Ukuri: 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
Ku bazobereye muri dinozore
- Izina rya siyansi
- Zavacephale
- Yiswe na
- Chinzorig et al. 20255
- Itsinda
- Imitwe y'ikibumbe
- Umuryango / ishami
- Pachycephalosauria5
- Ishyirwa mu byiciro
- Ornithischia > Pachycephalosauria5
- Imyaka y'amabuye
- imyaka miliyoni 120 kugeza 100 (Aptian / Albian)5
- Inzego z'amabuye
- Khuren Dukh5
- Ibihugu
- Mongoliya5
- Ibisigazwa byanditswe
- 1 muri The Paleobiology Database5
- Ivumburwa
- The fossil was found in 2019 in the Khuren Dukh Formation of Mongolia, and it was formally named by Tsogtbaatar Chinzorig and colleagues in 2025.12
- Biracyagibwaho impaka
- Scientists are still debating how the dome was used, whether for head-butting, display, or something else.2
Aho amakuru yakuwe
- 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): imyaka, ahantu, inzego z'amabuye, ishyirwa mu byiciro.
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Pachycephalosaurus
Stegoceras
Prenocephale
Sphaerotholus
Foraminacephale
Brontotholus
Stegosaurus
Iguanodon
Archaeopteryx
Giganotosaurus
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