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Rubeosaurus

Tur bi mooy: “bramble lizard”1

Lekkoon: GàncaxDino yu am béjjénKretase bu mujj

Rubeosaurus was a horned dinosaur with a big frill and spikes on its head. It lived in what is now Montana, USA, about 75 million years ago. It was a plant eater and walked on four legs.1 2

Dundoon

am na 84 ba 72 milyoŋ at5

Kretase bu mujj

Fosil yu ñu gis ci

Montana, USA, in the Two Medicine Formation1 2

Guddaay

5 ba 5,5 m (16 ba 18 ft)4

Diisaay

1,8 toon ba 2,7 toon (4 000 ba 6 000 lb)4

Kawewaay

1,8 m (5,9 ft)4

Gaawaay bi gën a kawe

lu tollu ci 32 km/h (20 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?

Naka la diisoon?

diis ni 2 oto

gudd ni 6 xaj, bakkan ba geengudd ni 31 banaana yu ñu topp-toppalediis ni 140 xajdiis ni 540 xaaldiis ni 3 klaas yu mat yu xale yu lekkooldiis ni 6 uurs yu weexmënoon na daw 100 meetar ci 11 segond (nit ki gën a gaaw dafay soxla 9,6)

Naka la Rubeosaurus 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)

Rubeosaurus lu tollu ci 32 km/h (20 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

Rubeosaurus had two long spikes on its neck frill that leaned inward toward each other, a feature that is unique to this dinosaur.3

The spikes on its frill were much shorter than those of its close relative Styracosaurus, with the longest measuring about 295 millimeters (11.6 inches).1

Rubeosaurus is known from very few fossils, only a few skull pieces, which made it one of the most mysterious horned dinosaurs.3

Scientists think Rubeosaurus was closely related to Einiosaurus, Achelousaurus, and Pachyrhinosaurus, based on the shape of its skull bones.3

Rubeosaurus lived in the same area and time as other horned dinosaurs like Einiosaurus and Achelousaurus, but they are found at different levels in the rock.3

The first fossil of Rubeosaurus was a piece of the back of the skull, found in Montana and described in 1930.1

Nataalu Rubeosaurus bu ñu def ak IA — Nataal bu IA def la, muy wone ni Rubeosaurus 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 Rubeosaurus

?How big was Rubeosaurus?

Scientists do not know its exact size because only a few skull pieces have been found, but it was probably about 5 to 5.5 metres (16 to 18 feet) long and weighed around 1.8 to 2.7 metric tons (2.0 to 3.0 short tons), like its close relative Styracosaurus.1 4

?What did Rubeosaurus eat?

Rubeosaurus was a plant eater. It had a beak and shearing cheek teeth that helped it slice up plants.1 4

?Did Rubeosaurus have feathers?

No, Rubeosaurus did not have feathers. It was a horned dinosaur with scales, like other ceratopsians.1

?When did Rubeosaurus live?

Rubeosaurus lived about 75 million years ago, during the Late Cretaceous Period.1 3

?Where was Rubeosaurus found?

All Rubeosaurus fossils have been found in the Two Medicine Formation of Montana, USA, near Landslide Butte on the Blackfeet Nation.3

?How many spikes did Rubeosaurus have?

Rubeosaurus had at least two long spikes on each side of its neck frill, and the longest spike measured about 295 millimetres (11.6 inches).1

?Was Rubeosaurus a dinosaur?

Yes, Rubeosaurus was a dinosaur. It was a horned dinosaur called a ceratopsian.1

?Is Rubeosaurus the same as Styracosaurus?

Rubeosaurus was originally named as a species of Styracosaurus, but scientists now think it is a different genus. Some researchers still consider it a species of Styracosaurus.1 3

Ku tas léeb yu dul dëgg

Léeb: Rubeosaurus is just a species of Styracosaurus.

Dëgg: Scientists used to think so, but in 2010 they gave it its own genus, Rubeosaurus, because its skull features are different. Some scientists still debate this, and it may be a species of Styracosaurus again.1

Ngir ñi xam dino lool

Turu xam-xam: Rubeosaurus
Ku ko tudde: McDonald and Horner 20105
Kurél: Dino yu am béjjén
Njaboot / klad: Ceratopsidae5
Klasifikasiyoŋ: Ornithischia > Ceratopsia > Ceratopsidae5
Màggaayu doj yi: 84 ba 72 milyoŋ at (Campanian)5
Formasiyoŋi doj: Two Medicine5
Réew yi: Amerig5
Fosil yu ñu gis: 2 ci The Paleobiology Database5
Gisees: The first fossil was found in Montana and named Styracosaurus ovatus by Charles Gilmore in 1930. In 2010, Andrew McDonald and Jack Horner gave it the new name Rubeosaurus after studying more fossils.1 3
Ñu ngi koy werante ba tey: Scientists still debate whether Rubeosaurus is its own genus or just a species of Styracosaurus, because the fossils are so incomplete.1

Fa xibaar yi jóge

Styracosaurus (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
A Subadult Specimen of Rubeosaurus ovatus (Dinosauria: Ceratopsidae), with Observations on Other Ceratopsids from the Two Medicine Formation | PLOS One (journals.plos.org)
Styracosaurus (Wikipedia) (Wikipedia)
Rubeosaurus in The Paleobiology Database (CC BY 4.0): at, béréb yi, formasiyoŋi doj, klasifikasiyoŋ.

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