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Alexeyisaurus

Izenaren esanahia: “Alexey's lizard”1

Jaten zuen: HaragiaPlesiosauroakGoi TriasikoaTeknikoki ez da dinosauroa

Alexeyisaurus was a long-necked marine reptile that swam in the oceans during the Late Triassic, about 210 million years ago. It was not a dinosaur, but a plesiosaur, a type of sea creature with a small head and four flippers. It lived near what is now Franz Josef Land in Russia.1 2

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 227 eta 211 milioi urte artean5

Goi Triasikoa

Fosilak hemen aurkitu dira:

Wilczek Land, Franz Josef Land, Russia1

Luzera

7 m (23 ft)2

Abiadura maximoa

26 km/h inguru (16 mph)

Igeri egitea, kalkulua

Noiz bizi izan zen?

Triasikoa

Jurasikoa

Kretazeoa

Duela 252 milioi urte20114566, asteroidea

Zein handia zen?

Zein luzea zen?

7 txakur bezain luze, sudurretik buztanerabata bestearen atzean jarritako 39 banana bezain luzeigerileku handi baten luzera (50 m) 6,9 segundotan egin zezakeen igerian

Zein handia zen Alexeyisaurus 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)

Alexeyisaurus 26 km/h inguru (16 mph)

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

Gepardo bat 100 km/h inguru (62 mph)

gauza bikainak

Datu dibertigarriak

Alexeyisaurus is one of the earliest known plesiosaurs, living during the Late Triassic period.3

Its body was about 7 meters (23 feet) long, which is as long as a small bus.2

The humerus (upper arm bone) was straight and very long, with flat ends that suggest the head of the bone was not fully hardened.2

Its femur (thigh bone) was slightly curved and had wider ends than the humerus, giving it a different shape.2

The vertebrae (back bones) were strictly amphicoelous, meaning they were hollow on both ends like a dumbbell.2

Scientists first thought Alexeyisaurus was an elasmosaur, but later studies say the skeleton is too poorly preserved to be sure.1

Alexeyisaurus: AAk egindako irudia — Alexeyisaurus 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

Alexeyisaurus: gehien egindako galderak

?Was Alexeyisaurus a dinosaur?

No, it was not a dinosaur. It was a plesiosaur, a type of long-necked marine reptile that lived in the ocean.4 1

?How big was Alexeyisaurus?

It was about 7 meters (23 feet) long, which is as long as a small bus.4

?When did Alexeyisaurus live?

It lived during the Late Triassic period, about 210 million years ago.4 1

Dino adituentzat

Izen zientifikoa: Alexeyisaurus
Izendatzailea:: Sennikov and Arkhangelsky 20105
Taldea: Plesiosauroak
Familia / klada: Elasmosauridae5
Sailkapena: Plesiosauria > Elasmosauridae > Sauropterygia5
Arroken adina: 227 eta 211 milioi urte artean (Norian)5
Arroka-formazioak: Wilczek5
Herrialdeak: Errusia5
Fosil-erregistroak: 1 The Paleobiology Database datu-basean5
Aurkikuntza: Alexeyisaurus was named by Russian paleontologists A. G. Sennikov and M. S. Arkhangelsky in 2010, based on an incomplete skeleton found on Wilczek Land in the Arctic.1 2
Oraindik eztabaidagai: Scientists are not sure if Alexeyisaurus was really an elasmosaurid plesiosaur, because the only skeleton found is incomplete and poorly preserved.1

Datuak nondik datozen

Alexeyisaurus (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
On a typical Jurassic sauropterygian from the Upper Triassic of Wilczek Land (Franz Josef Land, Arctic Russia) (exa.ai)
Alexeyisaurus – Plesiosaur Directory (plesiosauria.com)
Alexeyisaurus in The Paleobiology Database (CC BY 4.0): adina, tokiak, arroka-formazioak, sailkapena.

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