Ikarita ya dinozore nimero 1862 muri 2 027

Unktaheela

Izina risobanura: “from the Lakota word for a mythical water creature”1

Yaryaga: InyamaPlesiyozoreKiretase ya nyumaMu by'ukuri si dinozore

Unktaheela was a small, fast-swimming marine reptile that lived in the sea that once covered North America. It had a short neck, a big head with a long snout, and four flippers that worked like paddles. It was one of the smallest plesiosaurs ever found.2

Akantu gashimishije: iki gikururanda cyo mu nyanja cyogaga mu gihe dinozore zagendaga ku butaka. Bose bakita dinozore, ariko cyari mu rindi shami ry'ibikururanda.

Yabayeho

hashize imyaka miliyoni 84 kugeza 723

Kiretase ya nyuma

Ibisigazwa byabonetse muri

Wyoming and South Dakota, USA3 1

Uburebure

2,3 kugeza 2,6 m (7,5 kugeza 8,5 ft)2

Umuvuduko wo hejuru

nka 27 km/h (17 mph)

Koga, igereranya

Yabayeho ryari?

Triyasike

Jurasike

Kiretase

Hashize miliyoni 252 z'imyaka20114566, asiteroyide

Yanganaga ite?

Yari ndende ite?

ndende nk'imbwa 2,5 zikurikiranyendende nk'imineke 14 ikurikiranyeyashoboraga koga uburebure bwa pisine nini (50 m) mu masegonda 6,7

Unktaheela yanganaga ite ugereranyije NAWE?

Ni imibare gusa ibarirwa muri mushakisha yawe. Nta kintu kibikwa cyangwa cyoherezwa ahandi.

Yihutaga ite?

Umuntu ugenda n'amaguru nka 5 km/h (3 mph)

Umwana ku igare nka 12 km/h (7 mph)

Unktaheela nka 27 km/h (17 mph)

Ifarashi yiruka cyane nka 65 km/h (40 mph)

Ingwe yihuta cyane nka 100 km/h (62 mph)

utuntu twiza cyane

Utuntu dushimishije

Unktaheela is the smallest known adult polycotylid plesiosaur, measuring only about 2.3 to 2.6 metres long.2

It had bony ledges over its large eyes that may have shaded them from sunlight, like built-in sunglasses.2

Its skull was wide at the back and short behind the eyes, which helped it spot and catch prey.2

Unktaheela lived about 80 million years ago in the Western Interior Seaway, a shallow sea that split North America in two.2

Scientists think Unktaheela was a visual pursuit predator, meaning it chased its food using its sharp eyesight.2

The first fossil of Unktaheela was found in 1975 near Redbird, Wyoming, but it was not named until 2024.1 2

Ishusho ya Unktaheela yakozwe na AI — Ishusho yakozwe na AI yerekana uko Unktaheela ishobora kuba yari isa, yakozwe na mudasobwa hashingiwe ku byo abahanga bazi. Ni ugukeka gusa: inyamaswa nyayo ishobora kuba yari isa ukundi, kandi nta muntu uzi amabara yayo nyayo.

Ku bazobereye muri dinozore

Izina rya siyansi: Unktaheela
Yiswe na: Clark et al. 20243
Itsinda: Plesiyozore
Umuryango / ishami: Polycotylidae3
Ishyirwa mu byiciro: Plesiosauria > Sauropterygia3
Imyaka y'amabuye: imyaka miliyoni 84 kugeza 72 (Campanian)3
Inzego z'amabuye: Sharon Springs3
Ibihugu: Amerika3
Ibisigazwa byanditswe: 2 muri The Paleobiology Database3
Ivumburwa: Unktaheela was named in 2024 by Robert O. Clark, F. Robin O'Keefe, and Sara E. Slack based on two fossils from Wyoming and South Dakota.3 1
Biracyagibwaho impaka: Scientists are still debating exactly how Unktaheela used its unusual eye ledges and wide skull to hunt.2

Aho amakuru yakuwe

Unktaheela (en.wikipedia.org)
A new genus of small polycotylid plesiosaur from the Upper Cretaceous of the Western Interior Seaway and a clarification of the genus Dolichorhynchops (sciencedirect.com)
Unktaheela in The Paleobiology Database (CC BY 4.0): imyaka, ahantu, inzego z'amabuye, ishyirwa mu byiciro.

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