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Kaadi ya dayinoso No. 1167 ku 2 027

Meraxes

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

Yalyanga: EnnyamaDayinoso ezirya ennyamaEntandikwa ya Kuretasi

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

Yabeerawo

emyaka obukadde 110 okutuuka ku 106 emabega5

Entandikwa ya Kuretasi

Ebisigalira byazuulibwa mu

Huincul Formation, Neuquén Province, Patagonia, Argentina1 2

Obuwanvu

9 okutuuka ku 11.6 m (30 okutuuka ku 38 ft)2

Obuzito

ttani 4.263 (9,400 lb)1

Obugulumivu

3.4 m (11 ft)

kuteebereza

Sipiidi esinga

nga 24 km/h (15 mph)

Okudduka, kuteebereza

Yabeerawo ddi?

Tiriyasi

Jurasiki

Kuretasi

Emyaka obukadde 252 emabega20114566, asteroyidi

Yali munene atya?

Yali muwanvu kwenkana wa?

Yali mugulumivu kwenkana wa?

kuteebereza

Yali muzito kwenkana wa?

obuzito ng'obw'emmotoka 3

obuwanvu ng'emmotoka 2.5 ezisimbiddwa mu lunyiririobuwanvu ng'amenvu 64 nga gaddiriŋŋanaobuzito ng'obw'embwa 210obuzito ng'obwa wotamerooni 850obuzito ng'obw'ebibiina 5 ebijjuvu eby'abaana b'essomeroobuzito ng'obwa ddubu enjeru 9yandidduse mita 100 mu sikonda 15 (omuntu asinga embiro yeetaaga 9.6)

Meraxes yali munene atya bw'ogeraageranya ku GGWE?

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Yali wa mbiro kwenkana wa?

Omuntu atambula nga 5 km/h (3 mph)

Omwana ku kagaali nga 12 km/h (7 mph)

Meraxes nga 24 km/h (15 mph)

Embalaasi edduka ennyo nga 65 km/h (40 mph)

Cheetah nga 100 km/h (62 mph)

ebintu ebinyuvu

Ebyewuunyisa

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

Ekifaananyi kya Meraxes ekyakolebwa AI, nga kiraga engeri gye yayinza okuba ng'afaanana, ekyakolebwa kompyuta okusinziira ku ebyo bannassaayansi bye bamanyi. Kuteebereza: ekisolo ekyennyini kiyinza okuba nga kyali kifaanana bulala, era tewali amanyi langi zaakyo ez'amazima.

wabuuza

Ebibuuzo ebisinga okubuuzibwa ku 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

Eri abakugu mu dayinoso

Erinnya lya ssaayansi: Meraxes
Yatuumibwa: Canale et al. 20225
Ekibinja: Dayinoso ezirya ennyama
Ekika / ekibinja: Carcharodontosauridae5
Engabanya: Theropoda > Allosauroidea > Carcharodontosauridae5
Emyaka gy'enjazi: emyaka obukadde 110 okutuuka ku 106 (Albian)5
Ensengeka z'enjazi: Huincul5
Ensi: Arigentina5
Ebisigalira ebyazuulibwa: 1 mu The Paleobiology Database5
Okuzuulibwa: 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
Kikyakubaganyizibwako ebirowoozo: Scientists are not sure exactly how long Meraxes was, because different ways of measuring give different lengths.2

Ebituufu gye biva

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): emyaka, ebifo, ensengeka z'enjazi, engabanya.

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