Carta da dino nr. 1137 da 2 027

Marambionectes

Il num vul dir: “Marambio Island swimmer”1

Mangiava: CharnPlesiosaursCretacic tardivTecnicamain betg in dinosaur

Marambionectes was a long-necked marine reptile that swam in the seas near Antarctica about 70 million years ago. It was not a dinosaur, but a fierce hunter that used its flippers to glide through the water.1 3

Fatg divertent: quest reptil da mar nudava, entant ch'ils dinosaurs chaminavan sin terra. Tuts als numnan dinos, ma els eran in'autra rama dals reptils.

Viveva

avant 72 fin 66 milliuns onns3

Cretacic tardiv

Fossils chattads en

Antarctica, on Marambio (Seymour) Island in the López de Bertodano Formation1 3

Spertadad maximala

var 27 km/h (17 mph)

Nudar, stima

Cura viveva el?

Triassic

Giurassic

Cretacic

avant 252 milliuns onns20114566, l'asteroid

Quant spert era el?

Ina persuna che va a pe var 5 km/h (3 mph)

In uffant sin il velo var 12 km/h (7 mph)

Marambionectes var 27 km/h (17 mph)

In chaval che galoppescha var 65 km/h (40 mph)

In gepard var 100 km/h (62 mph)

chaussas cool

Fatgs divertents

Marambionectes had 48 neck vertebrae, and the 5th to 29th of these had special side keels, a feature not seen in other elasmosaurids.2

Its lower jaw had three tooth sockets at the front and a wide groove, which helped scientists link it to a group called aristonectines.2

The fossil skeleton was found in 2018 and includes parts of the skull, many vertebrae, ribs, and limb bones, all from an adult animal.1

Scientists think Marambionectes was closely related to the aristonectines, a group of elasmosaurids with short necks and big heads.1 2

The name honors Omar J. Molina, an Argentinian fossil preparator who worked in Antarctica.1

Maletg da Marambionectes fatg cun IA — In maletg fatg cun IA che mussa co Marambionectes pudess avair guardà ora, fatg d'in computer tenor quai che la scienza sa. I sa tracta d'ina supposiziun: l'animal vair ha forsa guardà ora auter, e sias colurs vairas èn nunenconuschentas.

Chatschader da mitus

Mitus: Some people think all plesiosaurs were dinosaurs.

Vardad: Plesiosaurs like Marambionectes were marine reptiles, not dinosaurs. Dinosaurs lived on land and had different body features.1

Per experts da dinos

Num scientific: Marambionectes
Numnà da: O’Gorman et al. 20243
Gruppa: Plesiosaurs
Famiglia / clada: Elasmosauridae3
Classificaziun: Plesiosauria > Elasmosauridae > Sauropterygia3
Vegliadetgna da la crappa: 72 fin 66 milliuns onns (Maastrichtian)3
Formaziuns da crap: López de Bertodano3
Pajais: Antarctica3
Chats da fossils: 1 en The Paleobiology Database3
Scuverta: The fossil was found in 2018 on Marambio Island, Antarctica, and was named by O'Gorman and colleagues in 2024.1 3
Anc discutà: Scientists are still debating exactly how Marambionectes is related to other elasmosaurids, especially whether it belongs inside or just outside the aristonectine group.1 2

Danunder che vegnan ils fatgs

Marambionectes (en.wikipedia.org)
Description: A new elasmosaurid (Plesiosauria :: NVK CVTI SR (ersearch2.cvtisr.sk)
Marambionectes in The Paleobiology Database (CC BY 4.0): vegliadetgna, lieus, formaziuns da crap, classificaziun.

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