Unktaheela

Igama lithetha: “from the Lakota word for a mythical water creature”1

Yayitya: InyamaIiplesiosauriiCretaceous yamvaNgokwenene ayisiyo dayinaso

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

Inyani emnandi: esi sirhubuluzi saselwandle sasiqubha ngelixa iidayinaso zazihamba emhlabeni. Wonke umntu uzibiza ngokuba ziidayinaso, kodwa zazilisebe elahlukileyo lezirhubuluzi.

Yaphila

84 ukuya ku-72 izigidi zeminyaka eyadlulayo3

iCretaceous yamva

Iifosili zifunyenwe:

Wyoming and South Dakota, USA3 1

Ubude

2.3 ukuya ku-2.6 m (7.5 ukuya ku-8.5 ft)2

Esona santya siphezulu

malunga ne-27 km/h (17 mph)

Ukuqubha, uqikelelo

Yaphila nini?

iTriassic

iJurassic

iCretaceous

Izigidi ezingama-252 zeminyaka eyadlulayo20114566, i-asteroyidi

Yayinkulu kangakanani?

Yayinde kangakanani?

inde njengezinja ezingama-2.5, impumlo ukuya emsileniinde njengeebhanana ezingama-14 zilandelelanaibinokuqubha ubude bechibi elikhulu lokuqubha (50 m) ngemizuzwana engama-6.7

Unktaheela wayemkhulu kangakanani xa ethelekiswa NAWE?

Yimathematika nje kwibhrawuza yakho. Akukho nto igcinwayo okanye ithunyelwe naphi na.

Yayikhawuleza kangakanani?

Umntu ohambayo malunga ne-5 km/h (3 mph)

Umntwana ekhwele ibhayisikile malunga ne-12 km/h (7 mph)

Unktaheela malunga ne-27 km/h (17 mph)

Ihashe elibaleka ngamandla malunga ne-65 km/h (40 mph)

Ingwenkala malunga ne-100 km/h (62 mph)

izinto ezimnandi

Iinyani ezimnandi

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

Umfanekiso owenziwe yi-AI: Unktaheela — Umfanekiso owenziwe yi-AI obonisa indlela Unktaheela esenokuba wayekhangeleka ngayo, wenziwe yikhompyutha ngokwento eyaziwa zizazinzulu. Kukuqikelela nje: esona silwanyana sinokuba sasikhangeleka ngenye indlela, kwaye akukho mntu waziyo imibala yaso yokwenyani.

Kwiingcali zeedayinaso

Igama lenzululwazi: Unktaheela
Inikwe igama ngu:: Clark et al. 20243
Iqela: Iiplesiosauri
Usapho / iclade: Polycotylidae3
Ukuhlelwa: Plesiosauria > Sauropterygia3
Ubudala bamatye: 84 ukuya ku-72 izigidi zeminyaka (Campanian)3
Izakhiwo zamatye: Sharon Springs3
Amazwe: iUSA3
Iirekhodi zeefosili: 2 kwi-Paleobiology Database3
Ukufunyanwa: 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
Kusaxoxwa ngayo: Scientists are still debating exactly how Unktaheela used its unusual eye ledges and wide skull to hunt.2

Apho iinyani zivela khona

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): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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