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Khathune ya Martinectes
Karete ya dinosaure No. 1144 ho tse 2 027

Martinectes

Lebitso le bolela: “Martin's swimmer”1
E jele: NamaDiplesiosaureKretase ya MoraoHa se dinosaure ho ya ka saense

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

Ntlha e monate: sehahabi sena sa lewatle se ne se sesa ha didinosaure di ntse di tsamaya naheng. Bohle ba di bitsa didinosaure, empa e ne e le lekala le leng la dihahabi.
E phetse
dilemo tse dimilione tse 84 ho isa ho 72 tse fetileng3
Kretase ya Morao
Difosili di fumanwe ho
South Dakota, Texas, and Wyoming, USA3
Bolelele
2.3 ho isa ho 2.6 m (7.5 ho isa ho 8.5 ft)1
Boima
ditone tse 1.27 (2,800 lb)2
Lebelo le phahameng ka ho fetisisa
e ka bang 26 km/h (16 mph)
Ho sesa, kakanyo

E phetse neng?

Triasiki
Jurasiki
Kretase
Dilemo tse dimilione tse 252 tse fetileng20114566, asteroiti

E ne e le kgolo hakae?

E ne e le telele hakae?

Martinectes bolelele ba e ka bang 2.6 m (8.5 ft)Baesekele ya motho e moholo e ka bang 1.8 m (5.9 ft)Koloi e ka bang 4.5 m (15 ft)Tlou, phoofolo e kgolo ka ho fetisisa naheng kajeno e ka bang 6.5 m (21 ft)

E ne e le boima hakae?

boima jwaloka dintja tse 64
telele jwaloka dintja tse 2.5 ho tloha nkong ho isa mohatlengtelele jwaloka dibanana tse 14 di behilwe ka molaboima jwaloka mahapu a 250boima jwaloka bana ba kereshe ba 67boima jwaloka bana ba sekolo ba 40boima jwaloka dibere tse tshweu tse 3e ne e ka sesa bolelele ba letamo le leholo la ho sesa (50 m) ka metsotswana e 6.9

Martinectes e ne e le kgolo hakae ha e bapiswa le WENA?

Ke dipalo feela ho browser ya hao. Ha ho letho le bolokwang kapa le romelwang kae kapa kae.

E ne e le lebelo hakae?

dintho tse monate

Dintlha tse monate

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

E entswe ke AISetshwantsho sa Martinectes se entsweng ke AI
Setshwantsho se entsweng ke AI, se bontshang kamoo Martinectes e ka beng e ne e shebahala kateng, se entswe ke khomphutha ho ya ka seo bo-ramahlale ba se tsebang. Ke ho hakanya feela: phoofolo ya nnete e ka nna ya ba e ne e shebahala ka tsela e nngwe, mme ha ho motho ya tsebang mebala ya yona ya nnete.
o botsitse

Dipotso tse botswang haholo ka 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

Bakeng sa ditsebi tsa didinosaure

Lebitso la saense
Martinectes
E rehilwe ke
Clark et al. 20243
Sehlopha
Diplesiosaure
Lelapa / leloko
Polycotylidae3
Tlhophiso
Plesiosauria > Sauropterygia3
Dilemo tsa mafika
dilemo tse dimilione tse 84 ho isa ho 72 (Campanian)3
Dibopeho tsa mafika
Pierre Shale, Taylor Marl3
Dinaha
Amerika3
Direkoto tsa difosili
3 ho The Paleobiology Database3
Ho sibollwa
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
E sa ntse e phehwa kgang
Scientists are still debating exactly how Martinectes used its unusual eye ledges and wide skull for hunting.1

Moo dintlha di tswang teng

  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): dilemo, dibaka, dibopeho tsa mafika, tlhophiso.

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