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Kartu dino No. 0020 ci 2 027

Acrocanthosaurus

Tur bi mooy: “high-spined lizard”1

Lekkoon: YàppDino yuy lekk yàppKretase bu jëkk ba Kretase bu mujj

Acrocanthosaurus was a huge meat-eating dinosaur that lived in North America about 110 million years ago. It had a row of tall spines along its back, neck and tail that made it look like a giant lizard with a fin. It was the biggest predator in its time, even before T. rex appeared.1 2

Dundoon

am na 121 ba 94 milyoŋ at4

Kretase bu jëkk ba Kretase bu mujj

Fosil yu ñu gis ci

Oklahoma, Texas, Maryland, and possibly other southeastern states, USA2 4

Guddaay

ba 12 m (39 ft)1

Diisaay

ba 2,6 toon (5 700 lb)2

Kawewaay

ba 4 m (13 ft)2

Gaawaay bi gën a kawe

lu tollu ci 28 km/h (17 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 1,5 oto

gudd ni 2,5 oto yu ñu taxawal ci benn rëddgudd ni 67 banaana yu ñu topp-toppalediis ni 130 xajdiis ni 520 xaaldiis ni 3 klaas yu mat yu xale yu lekkooldiis ni 6 uurs yu weexmënoon na daw 100 meetar ci 13 segond (nit ki gën a gaaw dafay soxla 9,6)

Naka la Acrocanthosaurus 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)

Acrocanthosaurus lu tollu ci 28 km/h (17 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

Acrocanthosaurus had 68 thin, knife-like teeth in its 1.4 metre long skull.2

Its arms were each about 0.9 metres long and ended in three sharp, curved claws used to grip and tear prey.2

Fossilized footprints show that Acrocanthosaurus ran alongside its prey and then lunged, attacking like a modern lion but slower.2

Only four skeletons of Acrocanthosaurus have ever been found, making it a very rare dinosaur.2

Acrocanthosaurus lived about 110 million years ago, which is 45 million years before T. rex walked the Earth.2

Its eyes faced sideways, so it had to tilt its head to look at prey with one eye.2

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

?How big was Acrocanthosaurus?

Acrocanthosaurus was about 11 to 11.5 metres (36 to 38 ft) long and weighed between 4.4 and 8.4 metric tons (4.9 and 9.3 short tons).3 1

?Was Acrocanthosaurus bigger than T. rex?

No, T. rex was generally heavier and more robust. While length estimates are similar, T. rex was typically bulkier than Acrocanthosaurus.2

?What did Acrocanthosaurus eat?

Acrocanthosaurus was a meat-eater that preyed on dinosaurs larger than itself, like the sauropod Pleurocoelus, as well as ornithopods and ankylosaurs.2 3

?When did Acrocanthosaurus live?

Acrocanthosaurus lived during the Early Cretaceous Period, about 110 million years ago, which is 45 million years before T. rex appeared.2 1

?Why did Acrocanthosaurus have a fin on its back?

Scientists are unsure what the tall spines on its back were for. They might have helped control body temperature, store fat, or communicate with others.2 3

?How fast could Acrocanthosaurus run?

Acrocanthosaurus probably could not run very fast. Its leg bones suggest it was not a fast runner, and it attacked like a modern lion but at a slower pace.3 2

?Where was Acrocanthosaurus found?

Acrocanthosaurus fossils have been found in Oklahoma, Texas, Wyoming, and Maryland in the United States. It lived across much of North America.3 1

?Is Acrocanthosaurus related to T. rex?

No, Acrocanthosaurus belonged to a different family of dinosaurs. It was more closely related to Allosaurus than to T. rex.2

Ku tas léeb yu dul dëgg

Léeb: Acrocanthosaurus is a type of tyrannosaur, related to T. rex.

Dëgg: Acrocanthosaurus belonged to a different family called Carcharodontosauridae, more closely related to Allosaurus. Tyrannosaurs had two fingers on each hand, while Acrocanthosaurus had three.2

Ngir ñi xam dino lool

Turu xam-xam: Acrocanthosaurus
Ku ko tudde: Stovall and Langston 19504
Kurél: Dino yuy lekk yàpp
Njaboot / klad: Carcharodontosauridae4
Klasifikasiyoŋ: Theropoda > Allosauroidea > Carcharodontosauridae4
Màggaayu doj yi: 121 ba 94 milyoŋ at (Aptian / Cenomanian)4
Formasiyoŋi doj: Antlers, Cloverly, Arundel Clay4
Réew yi: Amerig4
Fosil yu ñu gis: 14 ci The Paleobiology Database4
Gisees: Acrocanthosaurus was named in 1950 by paleontologists J. Willis Stovall and Wann Langston, Jr. The first fossils were found in Atoka County, Oklahoma, which gave the species its name atokensis.1 2
Ñu ngi koy werante ba tey: Scientists are not sure what the tall spines on Acrocanthosaurus's back were used for. They might have helped control body temperature or been used for display.2

Fa xibaar yi jóge

Acrocanthosaurus | Natural History Museum (nhm.ac.uk)
Frequently Asked Questions (naturalsciences.org)
Acrocanthosaurus (en.wikipedia.org)
Acrocanthosaurus in The Paleobiology Database (CC BY 4.0): at, béréb yi, formasiyoŋi doj, klasifikasiyoŋ.

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