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Umfanekiso wekhathuni: Martinectes
Ikhadi ledayinaso No. 1144 kwe-2 027

Martinectes

Igama lithetha: “Martin's swimmer”1
Yayitya: InyamaIiplesiosauriiCretaceous yamvaNgokwenene ayisiyo dayinaso

Martinectes was a small, fast-swimming marine reptile that lived in the shallow seas of North America during the time of the dinosaurs. It had a short neck, a long snout, and four big flippers that helped it chase after fish and squid.1

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:
South Dakota, Texas, and Wyoming, USA3
Ubude
2.3 ukuya ku-2.6 m (7.5 ukuya ku-8.5 ft)1
Ubunzima
1.27 iitoni (2,800 lb)2
Esona santya siphezulu
malunga ne-26 km/h (16 mph)
Ukuqubha, uqikelelo

Yaphila nini?

iTriassic
iJurassic
iCretaceous
Izigidi ezingama-252 zeminyaka eyadlulayo20114566, i-asteroyidi

Yayinkulu kangakanani?

Yayinde kangakanani?

Martinectes malunga ne-2.6 m ubude (8.5 ft)Ibhayisikile yomntu omdala malunga ne-1.8 m (5.9 ft)Imoto malunga ne-4.5 m (15 ft)Indlovu, esona silwanyana sikhulu emhlabeni namhlanje malunga ne-6.5 m (21 ft)

Yayinzima kangakanani?

inzima njengezinja ezingama-64
inde njengezinja ezingama-2.5, impumlo ukuya emsileniinde njengeebhanana ezingama-14 zilandelelanainzima njengamavatala angama-250inzima njengabantwana basenkulisa abangama-67inzima njengabantwana besikolo abangama-40inzima njengeebhere ezimhlophe ezingama-3ibinokuqubha ubude bechibi elikhulu lokuqubha (50 m) ngemizuzwana engama-6.9

Martinectes wayemkhulu kangakanani xa ethelekiswa NAWE?

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

Yayikhawuleza kangakanani?

izinto ezimnandi

Iinyani ezimnandi

1

Martinectes was one of the smallest adult polycotylid plesiosaurs ever found, measuring only about 2.3 to 2.6 metres long.1

2

It had large eyes with a bony ledge above them, which may have shaded its eyes from sunlight while hunting near the water's surface.1

3

Martinectes lived about 80 million years ago in the Western Interior Seaway, a huge ocean that split North America in two.1

4

Its name means 'Martin's swimmer', honoring the person who helped discover its fossils.1

5

Martinectes was originally thought to be a species of Dolichorhynchops, but scientists gave it its own genus in 2024.1

6

It had unusually wide bones in its spine and a very short back part of its skull, which helped scientists tell it apart from other plesiosaurs.1

Yenziwe yi-AIUmfanekiso owenziwe yi-AI: Martinectes
Umfanekiso owenziwe yi-AI obonisa indlela Martinectes 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: Martinectes

?How big was Martinectes?

Martinectes was a large polycotylid plesiosaur, measuring at least around 5 metres (16 ft) long. Some estimates suggest it could reach up to 6 to 7 metres (20 to 23 ft), while a 2026 estimate put it at about 4.95 metres (16.2 ft) long.2

?Was Martinectes a dinosaur?

No, Martinectes was a plesiosaur, a marine reptile that lived in the seas during the time of the dinosaurs. It was not a dinosaur.2

?What did Martinectes eat?

Martinectes likely chased after fish and squid, using its long snout and four big flippers to swim fast. Its small teeth and narrow jaws suggest it ate small, slippery prey.2

Kwiingcali zeedayinaso

Igama lenzululwazi
Martinectes
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
Pierre Shale, Taylor Marl3
Amazwe
iUSA3
Iirekhodi zeefosili
3 kwi-Paleobiology Database3
Ukufunyanwa
Martinectes was named in 2024 by Robert O. Clark, F. Robin O'Keefe, and Sara E. Slack. They studied fossils that had been found in Wyoming and South Dakota, USA, and realized they belonged to a new genus.31
Kusaxoxwa ngayo
Scientists are still debating exactly how Martinectes used its unusual eye ledges and wide skull for hunting.1

Apho iinyani zivela khona

  1. 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)
  2. Martinectes (en.wikipedia.org)
  3. Martinectes in The Paleobiology Database (CC BY 4.0): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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Ezinye ezivela kwiqela elinye: Iiplesiosauri

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Nezinye ezivela kwixesha elinye: iCretaceous yamva

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Phakela uRexingqayi yeethiphu yabantu abadala