Kartu dino No. 1996 ci 2 027

Yutyrannus

Tur bi mooy: “feathered tyrant”1

Lekkoon: YàppTiranosoor yiKretase bu jëkk

Yutyrannus was a big, feathered dinosaur that lived in China about 125 million years ago. It was a cousin of T. rex, but it had feathers all over its body. Scientists found three nearly complete skeletons, which helps us learn a lot about this amazing creature.2 1

Dundoon

am na 126 ba 120 milyoŋ at5

Kretase bu jëkk

Fosil yu ñu gis ci

Liaoning Province, China2 1

Guddaay

7,5 ba 10 m (25 ba 33 ft)1

Diisaay

1,1 toon ba 1,414 toon (2 400 ba 3 100 lb)1

Kawewaay

2,5 ba 3,5 m (8,2 ba 11 ft)1 2

Gaawaay bi gën a kawe

lu tollu ci 34 km/h (21 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 71 xaj

gudd ni 2 oto yu ñu taxawal ci benn rëddgudd ni 56 banaana yu ñu topp-toppalediis ni 280 xaaldiis ni 74 xale yu materneldiis ni 44 xale yu lekkooldiis ni 3 uurs yu weexmënoon na daw 100 meetar ci 11 segond (nit ki gën a gaaw dafay soxla 9,6)

Naka la Yutyrannus 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)

Yutyrannus lu tollu ci 34 km/h (21 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

Yutyrannus is the largest dinosaur ever found with direct evidence of feathers. It was about 40 times heavier than the previous record holder, Beipiaosaurus.1

The feathers of Yutyrannus were long and filamentous, up to 20 centimetres (7.9 inches) long. They may have covered most of its body.1

Yutyrannus lived during the early Cretaceous period, about 125 million years ago. That is about 55 million years before T. rex appeared.2 1

The three known Yutyrannus fossils were found together, which suggests they may have lived and hunted in packs.1

Yutyrannus had a bite force of about 2,405 newtons (540 pounds-force). That is strong, but much weaker than the bite of T. rex.1

The climate where Yutyrannus lived was cool, with an average annual temperature of about 10 °C (50 °F). Its feathers may have helped keep it warm.1

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

?How big was Yutyrannus?

About 7.5 to 10 metres long, and weighed around 1,100 to 1,414 kilograms.3 1

?Did Yutyrannus have feathers?

Yes. Fossil imprints show it had long, filamentous feathers up to 20 centimetres long, making it the largest dinosaur with direct evidence of feathers.2 1

?What did Yutyrannus eat?

It was a carnivore, meaning it ate meat. It may have hunted in packs to take down large prey like sauropods.3

?Was Yutyrannus bigger than T. rex?

No. Yutyrannus was about 7.5 to 10 metres long, while T. rex could grow to over 12 metres. T. rex was larger.3

?When did Yutyrannus live?

It lived during the Early Cretaceous period, about 125 million years ago. That is about 55 million years before T. rex appeared.3 1

?Where was Yutyrannus found?

Its fossils were found in Liaoning Province, northeastern China, in rocks of the Yixian Formation.3 1

?Why did Yutyrannus have a crest?

The wavy crest on its snout was probably used for display, like to attract mates or show off.1 4

?How fast could Yutyrannus run?

Scientists are not sure exactly, but its short foot was not specialized for running, so it was probably not very fast.1

?Is Yutyrannus a dinosaur?

Yes, it is a dinosaur. It belongs to the group Tyrannosauroidea, which includes T. rex and its relatives.3 1

Ku tas léeb yu dul dëgg

Léeb: All large dinosaurs were scaly, not feathered.

Dëgg: Yutyrannus shows that even some very large dinosaurs, like this 10-metre-long tyrannosaur, had feathers.2 1

Ngir ñi xam dino lool

Turu xam-xam: Yutyrannus
Ku ko tudde: Xu et al. 20125
Kurél: Tiranosoor yi
Njaboot / klad: Proceratosauridae5
Klasifikasiyoŋ: Theropoda > Tyrannosauroidea5
Màggaayu doj yi: 126 ba 120 milyoŋ at (Barremian / Aptian)5
Formasiyoŋi doj: Yixian5
Réew yi: Siin5
Fosil yu ñu gis: 1 ci The Paleobiology Database5
Gisees: Yutyrannus was named and described by Xu Xing and colleagues in 2012. The three fossils were bought from a fossil dealer who said they came from a single quarry in Liaoning, China.1
Ñu ngi koy werante ba tey: Scientists are not sure if the feathers covered the whole body or only certain parts. They also debate whether later, larger tyrannosaurs like T. rex had feathers as adults.1

Fa xibaar yi jóge

Yutyrannus (en.wikipedia.org)
A gigantic feathered dinosaur from the Lower Cretaceous of China | Nature (nature.com)
Yutyrannus | Natural History Museum (nhm.ac.uk)
Dinosaurs - Yutyrannus huali - The Australian Museum (australian.museum)
Yutyrannus in The Paleobiology Database (CC BY 4.0): at, béréb yi, formasiyoŋi doj, klasifikasiyoŋ.

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