Dino Wiki / Zonke iidayinaso / Iidayinaso ezitya inyama

Ikhadi ledayinaso No. 1167 kwe-2 027

Meraxes

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

Yayitya: InyamaIidayinaso ezitya inyamaiCretaceous yokuqala

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

Yaphila

110 ukuya ku-106 izigidi zeminyaka eyadlulayo5

iCretaceous yokuqala

Iifosili zifunyenwe:

Huincul Formation, Neuquén Province, Patagonia, Argentina1 2

Ubude

9 ukuya ku-11.6 m (30 ukuya ku-38 ft)2

Ubunzima

4.263 iitoni (9,400 lb)1

Ukuphakama

3.4 m (11 ft)

uqikelelo

Esona santya siphezulu

malunga ne-24 km/h (15 mph)

Ukubaleka, uqikelelo

Yaphila nini?

iTriassic

iJurassic

iCretaceous

Izigidi ezingama-252 zeminyaka eyadlulayo20114566, i-asteroyidi

Yayinkulu kangakanani?

Yayinde kangakanani?

Yayiphakame kangakanani?

uqikelelo

Yayinzima kangakanani?

inzima njengeemoto ezingama-3

inde njengeemoto ezingama-2.5 zipakwe zilandelelanainde njengeebhanana ezingama-64 zilandelelanainzima njengezinja ezingama-210inzima njengamavatala angama-850inzima njengamagumbi okufundela apheleleyo abantwana angama-5inzima njengeebhere ezimhlophe ezingama-9ibinokubaleka iimitha ezili-100 ngemizuzwana engama-15 (oyena mntu ukhawulezayo udinga i-9,6)

Meraxes wayemkhulu kangakanani xa ethelekiswa NAWE?

Yimathematika nje kwibhrawuza yakho. Akukho nto igcinwayo okanye ithunyelwe naphi na.

Yayikhawuleza kangakanani?

Umntu ohambayo malunga ne-5 km/h (3 mph)

Umntwana ekhwele ibhayisikile malunga ne-12 km/h (7 mph)

Meraxes malunga ne-24 km/h (15 mph)

Ihashe elibaleka ngamandla malunga ne-65 km/h (40 mph)

Ingwenkala malunga ne-100 km/h (62 mph)

izinto ezimnandi

Iinyani ezimnandi

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

Umfanekiso owenziwe yi-AI: Meraxes — Umfanekiso owenziwe yi-AI obonisa indlela Meraxes esenokuba wayekhangeleka ngayo, wenziwe yikhompyutha ngokwento eyaziwa zizazinzulu. Kukuqikelela nje: esona silwanyana sinokuba sasikhangeleka ngenye indlela, kwaye akukho mntu waziyo imibala yaso yokwenyani.

ubuzile

Eyona mibuzo ibuzwa kakhulu: 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

Kwiingcali zeedayinaso

Igama lenzululwazi: Meraxes
Inikwe igama ngu:: Canale et al. 20225
Iqela: Iidayinaso ezitya inyama
Usapho / iclade: Carcharodontosauridae5
Ukuhlelwa: Theropoda > Allosauroidea > Carcharodontosauridae5
Ubudala bamatye: 110 ukuya ku-106 izigidi zeminyaka (Albian)5
Izakhiwo zamatye: Huincul5
Amazwe: i-Argentina5
Iirekhodi zeefosili: 1 kwi-Paleobiology Database5
Ukufunyanwa: 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
Kusaxoxwa ngayo: Scientists are not sure exactly how long Meraxes was, because different ways of measuring give different lengths.2

Apho iinyani zivela khona

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): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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