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Ikhadi ledayinaso No. 1555 kwe-2 027

Riojasaurus

Igama lithetha: “lizard from La Rioja”1

Yayitya: IzityaloIintamo-ndeiTriassic yamva

Riojasaurus was a huge, plant-eating dinosaur with a long neck and a heavy body. It lived during the Late Triassic period in what is now Argentina. It probably walked slowly on all four legs, munching on leaves with its leaf-shaped teeth.1

Yaphila

227 ukuya ku-206 izigidi zeminyaka eyadlulayo4

iTriassic yamva

Iifosili zifunyenwe:

La Rioja Province, Argentina (Los Colorados Formation)1 2

Ubude

6.6 ukuya ku-10 m (22 ukuya ku-33 ft)1

Ubunzima

800 kg ukuya ku-3 iitoni (1,800 ukuya ku-6,600 lb)1

Ukuphakama

5 m (16 ft)3

Esona santya siphezulu

malunga ne-26 km/h (16 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-2

inde njengeemoto ezingama-2 zipakwe zilandelelanainde njengeebhanana ezingama-56 zilandelelanainzima njengezinja ezingama-150inzima njengamavatala angama-600inzima njengamagumbi okufundela apheleleyo abantwana angama-4inzima njengeebhere ezimhlophe ezingama-7iphakame ngokwaneleyo ukuba ilunguze efestileni yomgangatho 2ibinokubaleka iimitha ezili-100 ngemizuzwana engama-14 (oyena mntu ukhawulezayo udinga i-9,6)

Riojasaurus 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)

Riojasaurus malunga ne-26 km/h (16 mph)

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

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

izinto ezimnandi

Iinyani ezimnandi

Riojasaurus had very dense and massive leg bones, making it heavy and sturdy for an early sauropodomorph.1

Unlike most early relatives, Riojasaurus had four sacral vertebrae in its hip area instead of three, which helped support its weight.1

Its neck bones were longer than those of other sauropodomorphs found in the same formation, making its neck especially long.1

The first Riojasaurus skeleton found had no skull. A well-preserved skull was later discovered in 1987 and described in 1995.1

Some scientists think Riojasaurus may have been active at short intervals throughout the day and night, based on the shape of its eye bones (scleral rings).1

Riojasaurus is the only known riojasaurid dinosaur from South America, and it may be closely related to Melanorosaurus from southern Africa.1

Its front and hind limbs were nearly the same length, which is a clue that it walked on all fours and could not rear up on its back legs.1

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

?How big was Riojasaurus?

Riojasaurus was about 6.6 metres (21.7 feet) long and weighed around 800 kilograms (1,764 pounds). Some large individuals may have reached 10 metres (32.8 feet) long and weighed 3 metric tons (3.3 short tons).1

?What did Riojasaurus eat?

Riojasaurus was a herbivore that ate plants. Its leaf-shaped, serrated teeth were used for grazing on soft vegetation like gymnosperms, and it may have swallowed stones (gastroliths) to help grind food in its stomach.1 3

?Could Riojasaurus walk on two legs?

No, Riojasaurus probably walked on all four legs. Its front and hind limbs were nearly the same length, and its leg bones were dense and massive, suggesting it moved slowly on all fours and could not rear up on its back legs.1

?When did Riojasaurus live?

Riojasaurus lived during the Late Triassic Period, about 225 to 213 million years ago. Its fossils have been found in the Los Colorados Formation in Argentina.1

?Is Riojasaurus a dinosaur?

Yes, Riojasaurus is a dinosaur. It is a herbivorous sauropodomorph dinosaur from the Late Triassic of Argentina.1

?Did Riojasaurus have feathers?

No, there is no evidence that Riojasaurus had feathers. Its fossils show only scales and bones, and it is not known to have any feather-like structures.1

Kwiingcali zeedayinaso

Igama lenzululwazi: Riojasaurus
Inikwe igama ngu:: Bonaparte 19694
Iqela: Iintamo-nde
Usapho / iclade: Riojasauridae4
Ukuhlelwa: Sauropodomorpha4
Ubudala bamatye: 227 ukuya ku-206 izigidi zeminyaka (Norian)4
Izakhiwo zamatye: Los Colorados4
Amazwe: i-Argentina4
Iirekhodi zeefosili: 2 kwi-Paleobiology Database4
Ikwaziwa ngokuba: Strenusaurus (amagama amadala ngoku abalwa njengesilwanyana esinye)4
Ukufunyanwa: Riojasaurus was named by Argentine paleontologist José Bonaparte in 1969. The first skeleton (holotype PVL 3808) was found in 1966 in the Los Colorados Formation of La Rioja, Argentina. Later, many more skeletons and a skull were discovered.1 4
Kusaxoxwa ngayo: Scientists disagree on whether Riojasaurus was completely quadrupedal or could sometimes walk on two legs. The hand and shoulder bones suggest it might have been able to move in different ways.1

Apho iinyani zivela khona

Riojasaurus (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Riojasaurus | Zoology | Research Starters | EBSCOhost (ebsco.com)
Riojasaurus in The Paleobiology Database (CC BY 4.0): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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