Carta da dino nr. 1173 da 2 027

Metashastasaurus

Il num vul dir: “near Shastasaurus”1

Mangiava: CharnIctiosaursTriassic tardivTecnicamain betg in dinosaur

Metashastasaurus was a huge marine reptile that swam in the oceans during the Late Triassic, about 227 to 205 million years ago. It was not a dinosaur, but a kind of ichthyosaur, with a body like a dolphin and a long snout. It lived in the seas near what is now British Columbia, Canada.1 2

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 227 fin 206 milliuns onns3

Triassic tardiv

Fossils chattads en

Fossils were found in the Pardonet Formation of British Columbia, Canada.2

Spertadad maximala

var 46 km/h (29 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)

Metashastasaurus var 46 km/h (29 mph)

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

In gepard var 100 km/h (62 mph)

chaussas cool

Fatgs divertents

Metashastasaurus was first named in 2001 by scientists Nicholls and Manabe.1

Its skeleton is very similar to other shastasaurid ichthyosaurs, but its shoulder blade and fibula (a leg bone) are shaped differently.2

Its skull has large diamond-shaped frontals (bones on top of the head) that enter the supratemporal fenestrae, which are openings in the skull.2

It had four proximal carpals (wrist bones) and four digits in its front limb, showing that earlier reconstructions were based on incomplete material.2

Metashastasaurus lived in a marine environment and was nektonic, meaning it swam actively in the open water.1

It gave birth to live young, like other ichthyosaurs, rather than laying eggs.1

Maletg da Metashastasaurus fatg cun IA — In maletg fatg cun IA che mussa co Metashastasaurus 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 Metashastasaurus was a dinosaur because it lived in the same time as dinosaurs.

Vardad: Metashastasaurus was an ichthyosaur, a marine reptile, not a dinosaur. Ichthyosaurs lived in the sea and had fish-like bodies, while dinosaurs were land reptiles.1

Per experts da dinos

Num scientific: Metashastasaurus
Numnà da: Nicholls and Manabe 20013
Gruppa: Ictiosaurs
Famiglia / clada: Shastasauridae3
Classificaziun: Ichthyosauria > Ichthyosauromorpha3
Vegliadetgna da la crappa: 227 fin 206 milliuns onns (Norian)3
Formaziuns da crap: Pardonet3
Pajais: Canada3
Chats da fossils: 2 en The Paleobiology Database3
Scuverta: Metashastasaurus was named by Nicholls and Manabe in 2001 after they studied new specimens from Pink Mountain, British Columbia. These specimens showed that the species previously called Shastasaurus neoscapularis was different enough to be placed in a new genus.2
Anc discutà: Scientists are still debating whether the genus Shastasaurus is valid, because its type species is based on poor fossils. Metashastasaurus was created to help clarify this, but the relationships between these ichthyosaurs are still not fully settled.2

Danunder che vegnan ils fatgs

PBDB Taxon (paleobiodb.org)
A new genus of ichthyosaur from the Late Triassic... : Canadian Journal of Earth Sciences (ovid.com)
Metashastasaurus in The Paleobiology Database (CC BY 4.0): vegliadetgna, lieus, formaziuns da crap, classificaziun.

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