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Kaadi ya dayinoso No. 1555 ku 2 027

Riojasaurus

Erinnya litegeeza: “lizard from La Rioja”1

Yalyanga: EbimeraEz'ensingo empanvuEnkomerero ya Tiriyasi

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

Yabeerawo

emyaka obukadde 227 okutuuka ku 206 emabega4

Enkomerero ya Tiriyasi

Ebisigalira byazuulibwa mu

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

Obuwanvu

6.6 okutuuka ku 10 m (22 okutuuka ku 33 ft)1

Obuzito

800 kg okutuuka ku ttani 3 (1,800 okutuuka ku 6,600 lb)1

Obugulumivu

5 m (16 ft)3

Sipiidi esinga

nga 26 km/h (16 mph)

Okudduka, kuteebereza

Yabeerawo ddi?

Tiriyasi

Jurasiki

Kuretasi

Emyaka obukadde 252 emabega20114566, asteroyidi

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obuzito ng'obw'emmotoka 2

obuwanvu ng'emmotoka 2 ezisimbiddwa mu lunyiririobuwanvu ng'amenvu 56 nga gaddiriŋŋanaobuzito ng'obw'embwa 150obuzito ng'obwa wotamerooni 600obuzito ng'obw'ebibiina 4 ebijjuvu eby'abaana b'essomeroobuzito ng'obwa ddubu enjeru 7mugulumivu ekimala okulingiza mu ddirisa ku mwaliiro 2yandidduse mita 100 mu sikonda 14 (omuntu asinga embiro yeetaaga 9.6)

Riojasaurus yali munene atya bw'ogeraageranya ku GGWE?

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Omuntu atambula nga 5 km/h (3 mph)

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

Riojasaurus nga 26 km/h (16 mph)

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

Cheetah nga 100 km/h (62 mph)

ebintu ebinyuvu

Ebyewuunyisa

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

Ekifaananyi kya Riojasaurus 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 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

Eri abakugu mu dayinoso

Erinnya lya ssaayansi: Riojasaurus
Yatuumibwa: Bonaparte 19694
Ekibinja: Ez'ensingo empanvu
Ekika / ekibinja: Riojasauridae4
Engabanya: Sauropodomorpha4
Emyaka gy'enjazi: emyaka obukadde 227 okutuuka ku 206 (Norian)4
Ensengeka z'enjazi: Los Colorados4
Ensi: Arigentina4
Ebisigalira ebyazuulibwa: 2 mu The Paleobiology Database4
Era emanyiddwa nga: Strenusaurus (amannya ag'edda kati gabalibwa ng'ekisolo kye kimu)4
Okuzuulibwa: 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
Kikyakubaganyizibwako ebirowoozo: 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

Ebituufu gye biva

Riojasaurus (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Riojasaurus | Zoology | Research Starters | EBSCOhost (ebsco.com)
Riojasaurus in The Paleobiology Database (CC BY 4.0): emyaka, ebifo, ensengeka z'enjazi, engabanya.

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