Ikarita ya dinozore nimero 1173 muri 2 027

Metashastasaurus

Izina risobanura: “near Shastasaurus”1

Yaryaga: InyamaIktiyozoreTriyasike ya nyumaMu by'ukuri si dinozore

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

Akantu gashimishije: iki gikururanda cyo mu nyanja cyogaga mu gihe dinozore zagendaga ku butaka. Bose bakita dinozore, ariko cyari mu rindi shami ry'ibikururanda.

Yabayeho

hashize imyaka miliyoni 227 kugeza 2063

Triyasike ya nyuma

Ibisigazwa byabonetse muri

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

Umuvuduko wo hejuru

nka 46 km/h (29 mph)

Koga, igereranya

Yabayeho ryari?

Triyasike

Jurasike

Kiretase

Hashize miliyoni 252 z'imyaka20114566, asiteroyide

Yihutaga ite?

Umuntu ugenda n'amaguru nka 5 km/h (3 mph)

Umwana ku igare nka 12 km/h (7 mph)

Metashastasaurus nka 46 km/h (29 mph)

Ifarashi yiruka cyane nka 65 km/h (40 mph)

Ingwe yihuta cyane nka 100 km/h (62 mph)

utuntu twiza cyane

Utuntu dushimishije

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

Ishusho ya Metashastasaurus yakozwe na AI — Ishusho yakozwe na AI yerekana uko Metashastasaurus ishobora kuba yari isa, yakozwe na mudasobwa hashingiwe ku byo abahanga bazi. Ni ugukeka gusa: inyamaswa nyayo ishobora kuba yari isa ukundi, kandi nta muntu uzi amabara yayo nyayo.

Gusenya ibinyoma

Ibivugwa: Some people think Metashastasaurus was a dinosaur because it lived in the same time as dinosaurs.

Ukuri: 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

Ku bazobereye muri dinozore

Izina rya siyansi: Metashastasaurus
Yiswe na: Nicholls and Manabe 20013
Itsinda: Iktiyozore
Umuryango / ishami: Shastasauridae3
Ishyirwa mu byiciro: Ichthyosauria > Ichthyosauromorpha3
Imyaka y'amabuye: imyaka miliyoni 227 kugeza 206 (Norian)3
Inzego z'amabuye: Pardonet3
Ibihugu: Kanada3
Ibisigazwa byanditswe: 2 muri The Paleobiology Database3
Ivumburwa: 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
Biracyagibwaho impaka: 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

Aho amakuru yakuwe

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): imyaka, ahantu, inzego z'amabuye, ishyirwa mu byiciro.

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