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Kartu dino No. 1167 ci 2 027

Meraxes

Tur bi mooy: “named after a dragon from the Song of Ice and Fire books, and gigas means giant in Greek”1

Lekkoon: YàppDino yuy lekk yàppKretase bu jëkk

Meraxes was a huge, meat-eating dinosaur with very short arms, just like T. rex! It lived in what is now Argentina and had a skull longer than a tall adult human.1 2

Dundoon

am na 110 ba 106 milyoŋ at5

Kretase bu jëkk

Fosil yu ñu gis ci

Huincul Formation, Neuquén Province, Patagonia, Argentina1 2

Guddaay

9 ba 11,6 m (30 ba 38 ft)2

Diisaay

4,263 toon (9 400 lb)1

Kawewaay

3,4 m (11 ft)

jortu

Gaawaay bi gën a kawe

lu tollu ci 24 km/h (15 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 3 oto

gudd ni 2,5 oto yu ñu taxawal ci benn rëddgudd ni 64 banaana yu ñu topp-toppalediis ni 210 xajdiis ni 850 xaaldiis ni 5 klaas yu mat yu xale yu lekkooldiis ni 9 uurs yu weexmënoon na daw 100 meetar ci 15 segond (nit ki gën a gaaw dafay soxla 9,6)

Naka la Meraxes 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)

Meraxes lu tollu ci 24 km/h (15 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

Meraxes had arms that were only about half the length of its thigh bone, similar to T. rex and other giant meat-eaters.1

Its skull was 1.27 metres (4.2 feet) long, as big as the skull of Acrocanthosaurus.2

Meraxes is the most complete carcharodontosaurid skeleton ever found in the Southern Hemisphere.1

The second toe of Meraxes had an enormous claw, almost twice as long as the claw on its fourth toe.2

This dinosaur lived about 100 to 90 million years ago during the Cretaceous Period.3

Meraxes may have lived to be between 39 and 53 years old, making it one of the longest-lived meat-eating dinosaurs known.2

Its bones show that Meraxes grew to a huge size by taking a long time to grow, not by growing faster.2

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

?How big was Meraxes?

About 9 to 10 metres long, and it weighed around 4.26 metric tons.2

?Did Meraxes have feathers?

The sources do not mention feathers on Meraxes. It is not known for sure, but many large theropods like Meraxes are usually shown without feathers.1 2

?Was Meraxes bigger than T. rex?

No, Meraxes was smaller than T. rex. T. rex could be over 12 metres long, while Meraxes was about 9 to 10 metres.2

?What did Meraxes eat?

Meraxes was a meat-eater that likely hunted large plant-eating dinosaurs, such as sauropods like Argentinosaurus and Limaysaurus that lived in the same area.2

?Why did Meraxes have tiny arms?

Scientists think its arms shrank as its head grew bigger, because the skull took over the job of catching prey. This happened in several giant meat-eating dinosaur groups, including Meraxes and T. rex.1 4

?When did Meraxes live?

Meraxes lived about 100 to 90 million years ago, during the Cretaceous Period.2

?Could Meraxes swim?

There is no information about whether Meraxes could swim. Like most large theropods, it probably stayed on land.2

?How fast could Meraxes run?

The sources do not give a speed for Meraxes. As a large predator, it was probably not very fast, but no exact speed is known.2

Ngir ñi xam dino lool

Turu xam-xam: Meraxes
Ku ko tudde: Canale et al. 20225
Kurél: Dino yuy lekk yàpp
Njaboot / klad: Carcharodontosauridae5
Klasifikasiyoŋ: Theropoda > Allosauroidea > Carcharodontosauridae5
Màggaayu doj yi: 110 ba 106 milyoŋ at (Albian)5
Formasiyoŋi doj: Huincul5
Réew yi: Arsantin5
Fosil yu ñu gis: 1 ci The Paleobiology Database5
Gisees: The only known skeleton of Meraxes was found in 2012 in Argentina. Scientists named it in 2022 after a dragon from the Song of Ice and Fire books.2 1
Ñu ngi koy werante ba tey: Scientists are not sure exactly how long Meraxes was, because different ways of measuring give different lengths.2

Fa xibaar yi jóge

New giant carnivorous dinosaur reveals convergent evolutionary trends in theropod arm reduction: Current Biology (cell.com)
Meraxes (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Newly discovered dinosaur had tiny arms like T. rex | National Geographic (nationalgeographic.com)
Meraxes in The Paleobiology Database (CC BY 4.0): at, béréb yi, formasiyoŋi doj, klasifikasiyoŋ.

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