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Stika nwoma
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Ma me nwanwa!
Umoonasaurus
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
Berɛ bɛn na ɛtenaa ase?
Na ne kɛseɛ yɛ sɛn?
Na ne tenten yɛ sɛn?
ne tenten te sɛ nkraman 2.5 firi hwene kɔsi dua🍌ne tenten te sɛ kwadu 14 a wɔde abɔ toatoa so🏊anka ɔbɛtumi aguare nsuguarebea kɛseɛ (50 m) tenten wɔ sikɛn 6.9 muUmoonasaurus kɛseɛ yɛ sɛn sɛ wode toto WO ho a?
Akontaa nko ara wɔ wo browser mu. Yɛnkora biribiara so, na yɛmmfa biribiara nkɔ baabiara.
Na ɛyɛ ntɛm sɛn?
Nsɛm a ɛyɛ anigye
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.12
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.12
Its tail ended in a 'pygostyle-like' structure made of fused vertebrae, similar to the tail tip of some modern birds.1
Nsɛm a wɔbisa bebree fa Umoonasaurus ho
?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
Ma dino ho animdefoɔ
- Nyansahu din
- Umoonasaurus
- Obi a ɔtoo din
- Kear et al. 20065
- Kuo
- Plesiosɔɔ
- Abusua / kuo kɛseɛ
- Leptocleididae5
- Nkyekyɛmu
- Plesiosauria > Sauropterygia5
- Abotan no mfeɛ
- mfeɛ ɔpepem 121 kɔsi 100 (Aptian / Albian)5
- Abotan nhyehyɛeɛ
- Bulldog Shale5
- Aman
- Ɔstrelia5
- Fɔsil nkyerɛwee
- 4 wɔ The Paleobiology Database mu5
- Nhunumu
- 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
- Wɔda so gye ho akyinnye
- 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
Baabi a nsɛm no firi
- 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): mfeɛ, mmeaeɛ, abotan nhyehyɛeɛ, nkyekyɛmu.
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