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Karata ya dino No. 1857 mo go 2 027

Umoonasaurus

Leina le raya: “lizard of the Coober Pedy area, named after the local Antakirinja word 'Umoona'”1

E jele: NamaDipleisiosoroTshimologo ya CretaceousKa saense, ga se dinosoro

Umoonasaurus was a small, crested marine reptile that swam in cold seas near Antarctica about 115 million years ago. It had three bony crests on its head, like a tiny underwater dinosaur, but it was actually a plesiosaur, not a dinosaur. Its fossils are famous because they are preserved in beautiful blue opal.1 2

Ntlha e e monate: segagabi seno sa lewatle se ne se thuma fa dinosoro di ne di tsamaya mo lefatsheng. Mongwe le mongwe o di bitsa didino, mme e ne e le lekala le lengwe la digagabi.

E tshetse

dimilione tsa dingwaga di le 121 go ya go 100 tse di fetileng5

Tshimologo ya Cretaceous

Difosili di fitlhetswe kwa

South Australia, in opal mines near Coober Pedy, Andamooka, and other areas1

Boleele

2.5 m (8.2 ft)1 2

Bonako jo bogolo

e ka nna 26 km/h (16 mph)

Go thuma, kakanyo

E tshetse leng?

Triassic

Jurassic

Cretaceous

dimilione tsa dingwaga di le 252 tse di fetileng20114566, asteroiti

E ne e le kgolo go le kae?

E ne e le telele go le kae?

telele jaaka dintšwa di le 2.5 go tswa kwa nkong go ya kwa mogatlengtelele jaaka dibanana di le 14 di latelanae ne e ka thuma boleele jwa letamo le legolo la go thuma (50 m) mo metsotswaneng e le 6.9

Umoonasaurus e ne e le kgolo go le kae fa e bapisiwa le WENA?

Ke dipalo fela mo sebatling sa gago. Ga go sepe se se bolokwang kgotsa se se romelwang gope.

E ne e le bonako go le kae?

Motho yo o tsamayang e ka nna 5 km/h (3 mph)

Ngwana mo baesekeleng e ka nna 12 km/h (7 mph)

Umoonasaurus e ka nna 26 km/h (16 mph)

Pitse e e sianang ka bonako e ka nna 65 km/h (40 mph)

Lengau e ka nna 100 km/h (62 mph)

dilo tse di monate

Dintlha tse di monate

Umoonasaurus is known from several partial skeletons, and one of them is the most complete opalized vertebrate fossil ever found.1

It had three thin, blade-like crests on its skull: one along the top of its snout and a pair above its eyes. These crests may have been used for display, like a peacock's tail.1

Umoonasaurus lived in a cold, high-latitude inland sea near the South Pole, where water temperatures were near freezing.1 2

It was a small plesiosaur, only about 2.5 metres (8 feet) long as an adult. A juvenile specimen was less than 1 metre long.1

Umoonasaurus is the most primitive and also the last surviving member of its group, the rhomaleosaurids. It lived about 115 million years ago.1 2

Its tail ended in a 'pygostyle-like' structure made of fused vertebrae, similar to the tail tip of some modern birds.1

Setshwantsho sa Umoonasaurus se se dirilweng ke AI — Setshwantsho se se dirilweng ke AI sa kafa Umoonasaurus e ka tswang e ne e lebega ka gone, se dirilwe ke khomputara go ya ka se borasaense ba se itseng. Ke kakanyo fela: phologolo ya nnete e ka tswa e ne e lebega ka tsela e sele, mme ga go ope yo o itseng mebala ya yona ya nnete.

o botsitse

Dipotso tse di botswang thata ka ga Umoonasaurus

?What did Umoonasaurus eat?

Umoonasaurus ate small fish. Preserved gut contents show it ate small teleost fish.1

?Why did Umoonasaurus have crests?

Scientists think the three crests on its skull were used for display, like a peacock's tail, to help recognise each other or attract mates. They were too fragile for fighting.1

?Was Umoonasaurus a dinosaur?

No, Umoonasaurus was a plesiosaur, a type of marine reptile with four flippers. It was not a dinosaur.3 4 1

Ya baitseanape ba didino

Leina la saense: Umoonasaurus
Leina le neilwe ke: Kear et al. 20065
Setlhopha: Dipleisiosoro
Lelapa / clade: Leptocleididae5
Thulaganyo: Plesiosauria > Sauropterygia5
Bogolo jwa matlapa: 121 go ya go 100 dimilione tsa dingwaga (Aptian / Albian)5
Dibopego tsa matlapa: Bulldog Shale5
Dinaga: Ositerelia5
Direkoto tsa difosili: 4 mo The Paleobiology Database5
Go fitlhelwa: Umoonasaurus was named in 2006 by Benjamin Kear and colleagues. The holotype skeleton, nicknamed 'Eric', was bought by public donations and is preserved in opal from the Zorba Extension Opal Field near Coober Pedy, Australia.1
Go sa ntse go ganetsanwa: Scientists are not sure what the three crests on its head were used for. They were too fragile for fighting, so they might have been for display or recognizing other Umoonasaurus.1

Kwa dintlha di tswang teng

An archaic crested plesiosaur in opal from the Lower Cretaceous high-latitude deposits of Australia (pmc.ncbi.nlm.nih.gov)
An archaic crested plesiosaur in opal from the Lower Cretaceous high-latitude deposits of Australia (royalsocietypublishing.org)
Umoonasaurus (en.wikipedia.org)
Umoonasaurus demoscyllus - The Australian Museum (australian.museum)
Umoonasaurus in The Paleobiology Database (CC BY 4.0): dingwaga, mafelo, dibopego tsa matlapa, thulaganyo.

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