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Chithunzi choseketsa cha Martinectes
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Martinectes

Dzina limatanthauza: “Martin's swimmer”1
Ankadya: NyamaMaplesiosauriKumapeto kwa KretaseKwenikweni si dainoso

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

Mfundo yosangalatsa: chokwawa cha m'nyanja ichi chinkasambira pamene madainoso ankayenda pamtunda. Aliyense amazitcha madino, koma zinali nthambi ina ya zokwawa.
Ankakhala
zaka 84 mpaka 72 miliyoni zapitazo3
Kumapeto kwa Kretase
Mafosili apezeka ku
South Dakota, Texas, and Wyoming, USA3
Utali
2.3 mpaka 2.6 m (7.5 mpaka 8.5 ft)1
Kulemera
matani 1.27 (2,800 lb)2
Liwiro lalikulu kwambiri
pafupifupi 26 km/h (16 mph)
Kusambira, kuyerekeza

Ankakhala liti?

Triasiki
Jurasiki
Kretase
Zaka 252 miliyoni zapitazo20114566, asteroidi

Anali wamkulu bwanji?

Anali wautali bwanji?

Martinectes utali wa pafupifupi 2.6 m (8.5 ft)Njinga ya munthu wamkulu pafupifupi 1.8 m (5.9 ft)Galimoto pafupifupi 4.5 m (15 ft)Njovu, nyama yaikulu kwambiri pamtunda masiku ano pafupifupi 6.5 m (21 ft)

Ankalemera bwanji?

wolemera ngati agalu 64
wautali ngati agalu 2.5 otsatizana mphuno ndi mchirawautali ngati nthochi 14 zotsatizanawolemera ngati mavwende 250wolemera ngati ana a sukulu ya mkaka 67wolemera ngati ana a sukulu 40wolemera ngati zimbalangondo zoyera 3akanatha kusambira utali wa dziwe lalikulu losambira (50 m) m'masekondi 6.9

Martinectes anali wamkulu bwanji poyerekeza ndi IWEYO?

Ndi masamu chabe mu msakatuli wako. Palibe chimene chimasungidwa kapena kutumizidwa kwina kulikonse.

Anali ndi liwiro lotani?

zinthu zosangalatsa

Mfundo zosangalatsa

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

Chopangidwa ndi AIChithunzi cha Martinectes chopangidwa ndi AI
Chithunzi cha momwe Martinectes mwina ankaonekera, chopangidwa ndi kompyuta kuchokera pa zomwe asayansi amadziwa. Ndi kungoyerekeza: nyama yeniyeniyo mwina inkaoneka mosiyana, ndipo palibe amene akudziwa mitundu yake yeniyeni.
mwafunsa

Mafunso ofunsidwa kwambiri okhudza 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

Kwa akatswiri a madino

Dzina la sayansi
Martinectes
Anapatsidwa dzina ndi
Clark et al. 20243
Gulu
Maplesiosauri
Banja / kladi
Polycotylidae3
Magawidwe a sayansi
Plesiosauria > Sauropterygia3
Zaka za miyala
zaka 84 mpaka 72 miliyoni (Campanian)3
Mapangidwe a miyala
Pierre Shale, Taylor Marl3
Mayiko
Amereka3
Zolemba za mafosili
3 mu The Paleobiology Database3
Kupezeka
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
Akukambiranabe
Scientists are still debating exactly how Martinectes used its unusual eye ledges and wide skull for hunting.1

Kumene mfundo zimachokera

  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): zaka, malo, mapangidwe a miyala, magawidwe a sayansi.

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