Dino Wiki / Zonke iidayinaso / Iiplesiosauri

Ikhadi ledayinaso No. 1460 kwe-2 027

Polycotylus

Igama lithetha: “much-cupped vertebrae”1

Yayitya: InyamaIiplesiosauriiJurassic yamva ukuya ku-iCretaceous yamvaNgokwenene ayisiyo dayinaso

Polycotylus was a short-necked plesiosaur that swam in the warm seas of North America and Europe during the Cretaceous. It had a big head, strong flippers, and gave birth to live babies in the water, just like whales do today.1

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

Yaphila

152 ukuya ku-72 izigidi zeminyaka eyadlulayo3

iJurassic yamva ukuya ku-iCretaceous yamva

Iifosili zifunyenwe:

Kansas, South Dakota, Alabama, and Wyoming in the USA; also France and Russia1 2

Ubude

4.7 ukuya ku-5.4 m (15 ukuya ku-18 ft)1

Ubunzima

1 iitoni (2,200 lb)1

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?

Yayinzima kangakanani?

inzima njengezinja ezingama-50

inde njengezinja ezingama-5, impumlo ukuya emsileniinde njengeebhanana ezingama-30 zilandelelanainzima njengamavatala angama-200inzima njengabantwana basenkulisa abangama-53inzima njengabantwana besikolo abangama-31inzima njengeebhere ezimhlophe ezingama-2ibinokuqubha ubude bechibi elikhulu lokuqubha (50 m) ngemizuzwana engama-6.7

Polycotylus 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)

Polycotylus 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

Polycotylus was named by famous paleontologist Edward Drinker Cope in 1869 from fossils found in Kansas.1

A fossil of Polycotylus found in Kansas contains a single large fetus inside the mother, proving that these plesiosaurs gave live birth.1

The baby Polycotylus was about 1.5 metres (4.9 feet) long, which is about 32 percent of the mother's length.1

Polycotylus had a short neck and a long head, making it look a bit like a pliosaur, but it is actually a type of plesiosaur called a polycotylid.1

Its name means 'much-cupped vertebrae' because the bones in its spine have deep cup-like hollows.1

Polycotylus lived in the Western Interior Seaway, a shallow sea that split North America in two during the Cretaceous.1

Scientists think Polycotylus gave birth to just one large baby at a time, a strategy called K-selection.1

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

ubuzile

Eyona mibuzo ibuzwa kakhulu: Polycotylus

?How big was Polycotylus?

Polycotylus was a medium-sized plesiosaur, measuring about 4.7 to 5.4 metres (15 to 18 feet) long and weighing over 1 metric ton (1.1 short tons).1

?Did Polycotylus have a short neck?

Yes, Polycotylus had a short neck and a long head, unlike the long-necked plesiosaurs like Elasmosaurus.1

?What did Polycotylus eat?

Polycotylus had thick teeth with striations on their surfaces, which suggests it ate fish and other marine animals, but the sources do not give a specific diet.1

?When did Polycotylus live?

Polycotylus lived toward the end of the Cretaceous period, about 84 to 66 million years ago.1

Inyaniso ngeentsomi

Intsomi: Many people think all plesiosaurs had long necks like the Loch Ness Monster.

Inyaniso: Polycotylus had a short neck and a large head, very different from long-necked plesiosaurs like Elasmosaurus.1

Kwiingcali zeedayinaso

Igama lenzululwazi: Polycotylus
Inikwe igama ngu:: Cope 18693
Iqela: Iiplesiosauri
Usapho / iclade: Polycotylidae3
Ukuhlelwa: Plesiosauria > Sauropterygia3
Ubudala bamatye: 152 ukuya ku-72 izigidi zeminyaka (Kimmeridgian / Campanian)3
Izakhiwo zamatye: Niobrara, Frontier, Mooreville Chalk3
Amazwe: iUSA, iFransi, iRashiya3
Iirekhodi zeefosili: 10 kwi-Paleobiology Database3
Ukufunyanwa: Edward Drinker Cope named Polycotylus in 1869 from fragmentary bones found in the Niobrara Formation of Kansas. A nearly complete skeleton was later found in Alabama in 1949 but not described until 2002.1
Kusaxoxwa ngayo: Scientists are not sure exactly how many species of Polycotylus existed, and some species may be the same as others.1

Apho iinyani zivela khona

Polycotylus (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Polycotylus in The Paleobiology Database (CC BY 4.0): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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