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Umoonasaurus ci nataal bu fo
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Umoonasaurus

Tur bi mooy: “lizard of the Coober Pedy area, named after the local Antakirinja word 'Umoona'”1
Lekkoon: YàppPlesiyosoor yiKretase bu jëkkCi xam-xam, du dinosoor

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.12

Xibaar bu neex: reptil bu géej bii dafa daan féey ci jamono yi dinosoor yi daan dox ci suuf. Ñépp dañu leen di wooye dino, waaye beneen caru reptil lañu woon.
Dundoon
am na 121 ba 100 milyoŋ at5
Kretase bu jëkk
Fosil yu ñu gis ci
South Australia, in opal mines near Coober Pedy, Andamooka, and other areas1
Guddaay
2,5 m (8,2 ft)12
Gaawaay bi gën a kawe
lu tollu ci 26 km/h (16 mph)
Féey, jortu

Kañ la dundoon?

Triyaas
Jurasik
Kretase
Am na 252 milyoŋ at20114566, asteroyid bi

Naka la réyoon?

Naka la guddoon?

Umoonasaurus lu tollu ci 2,5 m ci guddaay (8,2 ft)Xaj lu tollu ci 1 m (3,3 ft)Weloy mag lu tollu ci 1,8 m (5,9 ft)Oto lu tollu ci 4,5 m (15 ft)
gudd ni 2,5 xaj, bakkan ba geengudd ni 14 banaana yu ñu topp-toppalemënoon na féey guddaayu pisin bu mag (50 m) ci 6,9 segond

Naka la Umoonasaurus réyoon, bu ñu ko méngalee ak YAW?

Ay kalkil rekk ci sa navigatëer. Dara du ñu denc, dara du ñu yónne fenn.

Naka la gaawoon?

yëf yu neex

Xibaar yu neex

1

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

2

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

3

Umoonasaurus lived in a cold, high-latitude inland sea near the South Pole, where water temperatures were near freezing.12

4

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

5

Umoonasaurus is the most primitive and also the last surviving member of its group, the rhomaleosaurids. It lived about 115 million years ago.12

6

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

Def ak IANataalu Umoonasaurus bu ñu def ak IA
Nataal bu IA def la, muy wone ni Umoonasaurus mën a meloon, ordinatëer moo ko def ci li boroom xam-xam yi xam. Jortu kese la: rab bi ci dëgg mën na meloon neneen, te kenn xamul ay kulëëram yu dëgg.
yeen a laaj

Laaj yi ñu gën a laaj ci 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.341

Ngir ñi xam dino lool

Turu xam-xam
Umoonasaurus
Ku ko tudde
Kear et al. 20065
Kurél
Plesiyosoor yi
Njaboot / klad
Leptocleididae5
Klasifikasiyoŋ
Plesiosauria > Sauropterygia5
Màggaayu doj yi
121 ba 100 milyoŋ at (Aptian / Albian)5
Formasiyoŋi doj
Bulldog Shale5
Réew yi
Ostarali5
Fosil yu ñu gis
4 ci The Paleobiology Database5
Gisees
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
Ñu ngi koy werante ba tey
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

Fa xibaar yi jóge

  1. An archaic crested plesiosaur in opal from the Lower Cretaceous high-latitude deposits of Australia (pmc.ncbi.nlm.nih.gov)
  2. An archaic crested plesiosaur in opal from the Lower Cretaceous high-latitude deposits of Australia (royalsocietypublishing.org)
  3. Umoonasaurus (en.wikipedia.org)
  4. Umoonasaurus demoscyllus - The Australian Museum (australian.museum)
  5. Umoonasaurus in The Paleobiology Database (CC BY 4.0): at, béréb yi, formasiyoŋi doj, klasifikasiyoŋ.

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