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
Хэзээ амьдарч байсан бэ?
Хэр том байсан бэ?
Хэр урт байсан бэ?
2,5 нохойг хамраас сүүлээр нь цувуулсантай тэнцэх урттай🍌14 бананыг дараалан тавьсантай тэнцэх урттай🏊том бассейны уртыг (50 м) 6,9 секундэд сэлж туулах чадалтайUmoonasaurus ЧАМТАЙ харьцуулахад хэр том байсан бэ?
Зүгээр л хөтөч доторх тооцоо. Юу ч хадгалагдахгүй, хаашаа ч илгээгдэхгүй.
Хэр хурдан байсан бэ?
Сонирхолтой баримтууд
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

Umoonasaurus: хамгийн их асуудаг асуултууд
?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
Үлэг гүрвэлийн мэргэжилтнүүдэд
- Шинжлэх ухааны нэр
- Umoonasaurus
- Нэр өгсөн
- Kear et al. 20065
- Бүлэг
- Плезиозаврууд
- Овог / клад
- Leptocleididae5
- Ангилал
- Plesiosauria > Sauropterygia5
- Чулуулгийн нас
- 121 / 100 сая жил (Aptian / Albian)5
- Чулуулгийн формацууд
- Bulldog Shale5
- Улсууд
- Австрали5
- Чулуужсан олдворын бүртгэл
- The Paleobiology Database дээр 45
- Нээлт
- 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
- Маргаантай хэвээр
- 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
Баримтууд хаанаас ирдэг вэ
- 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): нас, газар, чулуулгийн формац, ангилал.
Энэ хуудсан дээрх баримт бүр эх сурвалж руугаа заасан дугаартай. Хэрэв бид ямар нэг зүйл буруу бичсэн бол уучлаарай, бид шинжлэх ухааны сэтгүүл биш, зүгээр л үлэг гүрвэлд дурлагчид. [email protected] хаягаар бидэнд бичээрэй, бид засна.
Рекс өлсөж байна! Dino Wiki бол үлэг гүрвэлд дурлагч хүүдээ зориулж нэгэн аавын хийсэн төсөл бөгөөд үнэгүй, зар сурталчилгаагүй, хянагчгүй. Сайтыг цааш ажиллуулахад туслахын тулд томчууд Рексийг амттангаар хооллож болно.Рексийг хооллох