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Carta da dino nr. 1167 da 2 027

Meraxes

Il num vul dir: “named after a dragon from the Song of Ice and Fire books, and gigas means giant in Greek”1

Mangiava: CharnDinos carnivorsCretacic tempriv

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

Viveva

avant 110 fin 106 milliuns onns5

Cretacic tempriv

Fossils chattads en

Huincul Formation, Neuquén Province, Patagonia, Argentina1 2

Lunghezza

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

Paisa

4,263 tonnas (9 400 lb)1

Autezza

3,4 m (11 ft)

stima

Spertadad maximala

var 24 km/h (15 mph)

Currer, stima

Cura viveva el?

Triassic

Giurassic

Cretacic

avant 252 milliuns onns20114566, l'asteroid

Quant grond era el?

Quant lung era el?

Quant aut era el?

stima

Quant grev era el?

uschè grev sco 3 autos

uschè lung sco 2,5 autos parcads in suenter l'auteruschè lung sco 64 bananas ina suenter l'autrauschè grev sco 210 chaunsuschè grev sco 850 melunasuschè grev sco 5 classas da scola entirasuschè grev sco 9 urs polarspudess currer 100 meters en 15 secundas (il pli spert uman dovra 9,6)

Quant grond era Meraxes cumpareglià cun TAI?

Mo matematica en tes navigatur. Nagut na vegn arcunà u tramess.

Quant spert era el?

Ina persuna che va a pe var 5 km/h (3 mph)

In uffant sin il velo var 12 km/h (7 mph)

Meraxes var 24 km/h (15 mph)

In chaval che galoppescha var 65 km/h (40 mph)

In gepard var 100 km/h (62 mph)

chaussas cool

Fatgs divertents

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

Maletg da Meraxes fatg cun IA — In maletg fatg cun IA che mussa co Meraxes pudess avair guardà ora, fatg d'in computer tenor quai che la scienza sa. I sa tracta d'ina supposiziun: l'animal vair ha forsa guardà ora auter, e sias colurs vairas èn nunenconuschentas.

tias dumondas

Las dumondas las pli frequentas davart 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

Per experts da dinos

Num scientific: Meraxes
Numnà da: Canale et al. 20225
Gruppa: Dinos carnivors
Famiglia / clada: Carcharodontosauridae5
Classificaziun: Theropoda > Allosauroidea > Carcharodontosauridae5
Vegliadetgna da la crappa: 110 fin 106 milliuns onns (Albian)5
Formaziuns da crap: Huincul5
Pajais: Argentinia5
Chats da fossils: 1 en The Paleobiology Database5
Scuverta: 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
Anc discutà: Scientists are not sure exactly how long Meraxes was, because different ways of measuring give different lengths.2

Danunder che vegnan ils fatgs

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): vegliadetgna, lieus, formaziuns da crap, classificaziun.

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