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Ikhadi ledayinaso No. 0020 kwe-2 027

Acrocanthosaurus

Igama lithetha: “high-spined lizard”1

Yayitya: InyamaIidayinaso ezitya inyamaiCretaceous yokuqala ukuya ku-iCretaceous yamva

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

Yaphila

121 ukuya ku-94 izigidi zeminyaka eyadlulayo4

iCretaceous yokuqala ukuya ku-iCretaceous yamva

Iifosili zifunyenwe:

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

Ubude

ukuya kuthi ga ku-12 m (39 ft)1

Ubunzima

ukuya kuthi ga ku-2.6 iitoni (5,700 lb)2

Ukuphakama

ukuya kuthi ga ku-4 m (13 ft)2

Esona santya siphezulu

malunga ne-28 km/h (17 mph)

Ukubaleka, uqikelelo

Yaphila nini?

iTriassic

iJurassic

iCretaceous

Izigidi ezingama-252 zeminyaka eyadlulayo20114566, i-asteroyidi

Yayinkulu kangakanani?

Yayinde kangakanani?

Yayiphakame kangakanani?

Yayinzima kangakanani?

inzima njengeemoto ezingama-1.5

inde njengeemoto ezingama-2.5 zipakwe zilandelelanainde njengeebhanana ezingama-67 zilandelelanainzima njengezinja ezingama-130inzima njengamavatala angama-520inzima njengamagumbi okufundela apheleleyo abantwana angama-3inzima njengeebhere ezimhlophe ezingama-6ibinokubaleka iimitha ezili-100 ngemizuzwana engama-13 (oyena mntu ukhawulezayo udinga i-9,6)

Acrocanthosaurus 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)

Acrocanthosaurus malunga ne-28 km/h (17 mph)

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

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

izinto ezimnandi

Iinyani ezimnandi

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

Umfanekiso owenziwe yi-AI: Acrocanthosaurus — Umfanekiso owenziwe yi-AI obonisa indlela Acrocanthosaurus 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: 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

Inyaniso ngeentsomi

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

Inyaniso: 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

Kwiingcali zeedayinaso

Igama lenzululwazi: Acrocanthosaurus
Inikwe igama ngu:: Stovall and Langston 19504
Iqela: Iidayinaso ezitya inyama
Usapho / iclade: Carcharodontosauridae4
Ukuhlelwa: Theropoda > Allosauroidea > Carcharodontosauridae4
Ubudala bamatye: 121 ukuya ku-94 izigidi zeminyaka (Aptian / Cenomanian)4
Izakhiwo zamatye: Antlers, Cloverly, Arundel Clay4
Amazwe: iUSA4
Iirekhodi zeefosili: 14 kwi-Paleobiology Database4
Ukufunyanwa: 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
Kusaxoxwa ngayo: 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

Apho iinyani zivela khona

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): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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