Dino Wiki / Didinosaure tsohle / Diplesiosaure

Karete ya dinosaure No. 1857 ho tse 2 027

Umoonasaurus

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

E jele: NamaDiplesiosaureKretase ya PeleHa se dinosaure ho ya ka saense

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 monate: sehahabi sena sa lewatle se ne se sesa ha didinosaure di ntse di tsamaya naheng. Bohle ba di bitsa didinosaure, empa e ne e le lekala le leng la dihahabi.

E phetse

dilemo tse dimilione tse 121 ho isa ho 100 tse fetileng5

Kretase ya Pele

Difosili di fumanwe ho

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

Bolelele

2.5 m (8.2 ft)1 2

Lebelo le phahameng ka ho fetisisa

e ka bang 26 km/h (16 mph)

Ho sesa, kakanyo

E phetse neng?

Triasiki

Jurasiki

Kretase

Dilemo tse dimilione tse 252 tse fetileng20114566, asteroiti

E ne e le kgolo hakae?

E ne e le telele hakae?

telele jwaloka dintja tse 2.5 ho tloha nkong ho isa mohatlengtelele jwaloka dibanana tse 14 di behilwe ka molae ne e ka sesa bolelele ba letamo le leholo la ho sesa (50 m) ka metsotswana e 6.9

Umoonasaurus e ne e le kgolo hakae ha e bapiswa le WENA?

Ke dipalo feela ho browser ya hao. Ha ho letho le bolokwang kapa le romelwang kae kapa kae.

E ne e le lebelo hakae?

Motho ya tsamayang ka maoto e ka bang 5 km/h (3 mph)

Ngwana a palame baesekele e ka bang 12 km/h (7 mph)

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

Pere e mathang ka matla e ka bang 65 km/h (40 mph)

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

dintho tse monate

Dintlha tse 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 entsweng ke AI — Setshwantsho se entsweng ke AI, se bontshang kamoo Umoonasaurus e ka beng e ne e shebahala kateng, se entswe ke khomphutha ho ya ka seo bo-ramahlale ba se tsebang. Ke ho hakanya feela: phoofolo ya nnete e ka nna ya ba e ne e shebahala ka tsela e nngwe, mme ha ho motho ya tsebang mebala ya yona ya nnete.

o botsitse

Dipotso tse botswang haholo ka 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

Bakeng sa ditsebi tsa didinosaure

Lebitso la saense: Umoonasaurus
E rehilwe ke: Kear et al. 20065
Sehlopha: Diplesiosaure
Lelapa / leloko: Leptocleididae5
Tlhophiso: Plesiosauria > Sauropterygia5
Dilemo tsa mafika: dilemo tse dimilione tse 121 ho isa ho 100 (Aptian / Albian)5
Dibopeho tsa mafika: Bulldog Shale5
Dinaha: Australia5
Direkoto tsa difosili: 4 ho The Paleobiology Database5
Ho sibollwa: 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
E sa ntse e phehwa kgang: 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

Moo 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): dilemo, dibaka, dibopeho tsa mafika, tlhophiso.

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