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Kartu dino No. 0395 ci 2 027

Chasmosaurus

Tur bi mooy: “opening lizard, referring to the large openings in its frill”1

Lekkoon: GàncaxDino yu am béjjénKretase bu mujj

Chasmosaurus was a plant-eating dinosaur with a huge bony frill on its head. It lived in what is now Canada and the USA during the Late Cretaceous period, about 77 to 74 million years ago. It was smaller than its famous relative Triceratops, but still weighed as much as a car.1

Dundoon

am na 84 ba 72 milyoŋ at3

Kretase bu mujj

Fosil yu ñu gis ci

Alberta, Canada and Montana, USA1 3

Guddaay

4,3 ba 4,8 m (14 ba 16 ft)1

Diisaay

1,5 toon ba 2 toon (3 300 ba 4 400 lb)1

Kawewaay

1,6 m (5,2 ft)

jortu

Gaawaay bi gën a kawe

lu tollu ci 35 km/h (22 mph)

Daw, jortu

Kañ la dundoon?

Triyaas

Jurasik

Kretase

Am na 252 milyoŋ at20114566, asteroyid bi

Naka la réyoon?

Naka la guddoon?

Naka la kawewoon?

jortu

Naka la diisoon?

diis ni 1,5 oto

gudd ni 5 xaj, bakkan ba geengudd ni 27 banaana yu ñu topp-toppalediis ni 100 xajdiis ni 400 xaaldiis ni 2,5 klaas yu mat yu xale yu lekkooldiis ni 4 uurs yu weexmënoon na daw 100 meetar ci 10 segond (nit ki gën a gaaw dafay soxla 9,6)

Naka la Chasmosaurus réyoon, bu ñu ko méngalee ak YAW?

Ay kalkil rekk ci sa navigatëer. Dara du ñu denc, dara du ñu yónne fenn.

Naka la gaawoon?

Nit kuy dox lu tollu ci 5 km/h (3 mph)

Xale bu nekk ci welo lu tollu ci 12 km/h (7 mph)

Chasmosaurus lu tollu ci 35 km/h (22 mph)

Fas buy daw bu gaaw lu tollu ci 65 km/h (40 mph)

Segg bu gaaw lu tollu ci 100 km/h (62 mph)

yëf yu neex

Xibaar yu neex

The name Chasmosaurus means 'opening lizard' because its frill had huge holes, called fenestrae, that made it lighter.1

It was first named Protorosaurus, but that name was already used for another reptile, so it was changed to Chasmosaurus in 1914.1

Some scientists think that Chasmosaurus lived alongside other horned dinosaurs like Centrosaurus, but they probably ate different plants to avoid competing.1

Fossils of Chasmosaurus include skin impressions, which are very rare and help scientists understand what its skin looked like.1

One specimen, ROM 843, is a nearly complete skeleton that shows how the dinosaur was built.1

Chasmosaurus had a short nose and a beak, and its frill was probably used for display or to attract mates.1

Nataalu Chasmosaurus bu ñu def ak IA — Nataal bu IA def la, muy wone ni Chasmosaurus mën a meloon, ordinatëer moo ko def ci li boroom xam-xam yi xam. Jortu kese la: rab bi ci dëgg mën na meloon neneen, te kenn xamul ay kulëëram yu dëgg.

yeen a laaj

Laaj yi ñu gën a laaj ci Chasmosaurus

?How big was Chasmosaurus?

Chasmosaurus was about 4.3 to 4.8 metres (14 to 16 feet) long and weighed around 1.5 to 2 tonnes (3,300 to 4,400 pounds). That is about the size of a small car.1 2

?What did Chasmosaurus eat?

Chasmosaurus was a herbivore, meaning it ate plants. It had a horny beak and teeth for cropping and chewing plant material.2

?Did Chasmosaurus have feathers?

No, Chasmosaurus did not have feathers. It had scaly skin, and we know this because fossil skin impressions have been found showing large scales in rows.1

?Why did Chasmosaurus have a frill?

The frill was probably used for display, to attract mates, or to make the dinosaur look bigger. It had huge holes to make it lighter, so it was not much use for defense.1

?Could Chasmosaurus walk on two legs?

No, Chasmosaurus walked on all four legs. Its front legs were shorter than its back legs, but it was quadrupedal.2

?When did Chasmosaurus live?

Chasmosaurus lived during the Late Cretaceous Period, about 77 to 74 million years ago.1 2

?Where was Chasmosaurus found?

Fossils of Chasmosaurus were found in the Dinosaur Park Formation in Alberta, Canada. All excavated specimens come from that area.1

?Was Chasmosaurus related to Triceratops?

Yes, Chasmosaurus was a ceratopsid, so it was related to Triceratops. But Chasmosaurus was smaller and had a longer frill with big holes.1

Ku tas léeb yu dul dëgg

Léeb: Some people think Chasmosaurus was a type of Triceratops.

Dëgg: Chasmosaurus was a different genus of ceratopsid dinosaur, with a much larger frill and smaller horns than Triceratops.1

Ngir ñi xam dino lool

Turu xam-xam: Chasmosaurus
Ku ko tudde: Lambe 19143
Kurél: Dino yu am béjjén
Njaboot / klad: Ceratopsidae3
Klasifikasiyoŋ: Ornithischia > Ceratopsia > Ceratopsidae3
Màggaayu doj yi: 84 ba 72 milyoŋ at (Campanian)3
Formasiyoŋi doj: Dinosaur Park, Oldman, Judith River3
Réew yi: Kanadaa, Amerig3
Fosil yu ñu gis: 21 ci The Paleobiology Database3
Ñu ngi koy wooye itam: Eoceratops, Mojoceratops, Protorosaurus (tur yu njëkk yi, léegi ñu ngi leen jàppe ni benn rab rekk)3
Gisees: The first Chasmosaurus fossil was found in 1898 by Lawrence Lambe in Alberta, Canada. He named it Monoclonius belli at first, but later changed the name to Chasmosaurus in 1914.1
Ñu ngi koy werante ba tey: Scientists still debate whether some fossils belong to Chasmosaurus or to a separate genus called Mojoceratops.1 3

Fa xibaar yi jóge

Chasmosaurus (en.wikipedia.org)
Chasmosaurus | Natural History Museum (nhm.ac.uk)
Chasmosaurus in The Paleobiology Database (CC BY 4.0): at, béréb yi, formasiyoŋi doj, klasifikasiyoŋ.

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