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Plesiosaurus

Izenaren esanahia: “near reptile”1

Jaten zuen: HaragiaPlesiosauroakGoi Triasikoa eta Goi Kretazeoa arteanTeknikoki ez da dinosauroa

Plesiosaurus was a marine reptile that swam in the oceans while dinosaurs lived on land. It had a long neck, a small head, and four flipper-like limbs to push through the water. It was about 3.5 metres long and ate small prey like fish and crustaceans.1

Datu dibertigarria: itsas narrasti hau igerian zebilen dinosauroak lehorrean ibiltzen ziren bitartean. Denek dino deitzen diete, baina narrastien beste adar bat ziren.

Bizi izan zen

Duela 206 eta 66 milioi urte artean5

Goi Triasikoa eta Goi Kretazeoa artean

Fosilak hemen aurkitu dira:

Fossils have been found in the United Kingdom, especially along the Jurassic Coast, and also in France, the USA, Belgium, New Zealand, and South Africa.1 2

Luzera

3,5 m (11 ft)1

Abiadura maximoa

29 km/h inguru (18 mph)

Igeri egitea, kalkulua

Noiz bizi izan zen?

Triasikoa

Jurasikoa

Kretazeoa

Duela 252 milioi urte20114566, asteroidea

Zein handia zen?

Zein luzea zen?

4 txakur bezain luze, sudurretik buztanerabata bestearen atzean jarritako 19 banana bezain luzeigerileku handi baten luzera (50 m) 6,2 segundotan egin zezakeen igerian

Zein handia zen Plesiosaurus ZUREKIN alderatuta?

Zure nabigatzaileko kalkulu hutsak. Ez da ezer gordetzen ez inora bidaltzen.

Zein azkarra zen?

Pertsona bat oinez 5 km/h inguru (3 mph)

Haur bat bizikletan 12 km/h inguru (7 mph)

Plesiosaurus 29 km/h inguru (18 mph)

Zaldi bat lauhazka 65 km/h inguru (40 mph)

Gepardo bat 100 km/h inguru (62 mph)

gauza bikainak

Datu dibertigarriak

Plesiosaurus was named in 1821 by William Conybeare and Henry Thomas De la Beche, and the name means 'near reptile'.1

Mary Anning discovered an almost complete Plesiosaurus skeleton in 1823, which helped scientists understand what these animals looked like.1

Plesiosaurs swam with four flipper-like limbs, and experiments with robot flippers showed they could generate 60% more thrust from their back flipper by timing both limbs carefully.1

Plesiosaurs were unable to return to land, so they likely gave birth to live young in the open water, as supported by a preserved foetus in a related species.1

Plesiosaurs survived for more than 140 million years, making it through multiple extinctions that wiped out other groups.1

Some plesiosaurs swallowed stones that stayed in their stomachs, possibly to help break up food or to help with buoyancy.1

Plesiosaurus: AAk egindako irudia — Plesiosaurus nolakoa izan zitekeen erakusten duen AAk egindako irudia, ordenagailu batek zientzialariek dakitenetik sortua. Asmakizun bat da: benetako animalia desberdina izan zitekeen, eta inork ez daki zein ziren bere benetako koloreak.

zure galderak

Plesiosaurus: gehien egindako galderak

?Is Plesiosaurus a dinosaur?

No, it is a marine reptile that lived in the oceans while dinosaurs lived on land. It is only distantly related to dinosaurs.1

?How big was Plesiosaurus?

It was about 3.5 metres (11 feet) long.3 1

?What did Plesiosaurus eat?

It ate small prey like fish and crustaceans.1

?When did Plesiosaurus live?

It lived during the Early Jurassic, about 203 to 174 million years ago.3

?Who discovered Plesiosaurus?

Mary Anning discovered the first complete skeleton in 1823 near Lyme Regis, England.3 1

?Did Plesiosaurus have live babies?

Yes, it gave birth to live young in the water. A fossil of a related species shows a single large baby inside its mother.1 4

?Could Plesiosaurus go on land?

No, it was fully adapted to life in the water and could not return to land.1

Mito-hauslea

Mitoa: Plesiosaurs are often thought to be dinosaurs, especially because they lived at the same time.

Egia: Plesiosaurs are marine reptiles and are only distantly related to dinosaurs, which lived on land.1

Dino adituentzat

Izen zientifikoa: Plesiosaurus
Izendatzailea:: de la Beche and Conybeare 18215
Taldea: Plesiosauroak
Familia / klada: Plesiosauroidea5
Sailkapena: Plesiosauria > Sauropterygia5
Arroken adina: 206 eta 66 milioi urte artean (Rhaetian / Maastrichtian)5
Arroka-formazioak: Kimmeridge Clay, Charmouth Mudstone, Westbury5
Herrialdeak: Erresuma Batua, Frantzia, AEB, Belgika, Zeelanda Berria, Hegoafrika5
Fosil-erregistroak: 55 The Paleobiology Database datu-basean5
Aurkikuntza: Plesiosaurus was named in 1821 by William Conybeare and Henry Thomas De la Beche, and Mary Anning discovered an almost complete skeleton in 1823.1
Oraindik eztabaidagai: Scientists still debate how plesiosaurs used their four flippers to swim, and whether the stones they swallowed helped with digestion or buoyancy.1

Datuak nondik datozen

What is a plesiosaur? The prehistoric sea creatures that inspired the Loch Ness Monster | Natural History Museum (nhm.ac.uk)
PBDB Taxon (paleobiodb.org)
Plesiosaurus (Wikipedia) (Wikipedia)
Plesiosaur (en.wikipedia.org)
Plesiosaurus in The Paleobiology Database (CC BY 4.0): adina, tokiak, arroka-formazioak, sailkapena.

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