Ikarita ya dinozore nimero 1685 muri 2 027

Sisteronia

Izina risobanura: “Sister's own, named after the Sisteron region in France”1

Yaryaga: InyamaIktiyozoreKiretase ya mbere kugeza Kiretase ya nyumaMu by'ukuri si dinozore

Sisteronia was a fast-swimming marine reptile that lived in the Cretaceous seas. It had sharp teeth for catching small fish and squid. Sisteronia was an ichthyosaur, not a dinosaur, and looked a bit like a modern dolphin.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 113 kugeza 943

Kiretase ya mbere kugeza Kiretase ya nyuma

Ibisigazwa byabonetse muri

England (Gault Formation, Cambridge Greensand Member), France (Vocontian Basin), and Russia3 1

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)

Sisteronia 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

Sisteronia had teeth that were rectangular in cross-section, which is unusual among ichthyosaurs.2

It lived during the Albian and early Cenomanian stages of the Cretaceous, about 112 to 100 million years ago.2

Sisteronia is known from fossils found in England, France, and Russia, showing it lived in the seas of western Europe.3

This ichthyosaur belonged to the group Platypterygiinae, which were the last surviving ichthyosaurs before they went extinct.2

The name Sisteronia comes from the town of Sisteron in France, near where some of its fossils were found.1

Sisteronia had a raised process on the floor of the foramen magnum (the hole in the skull for the spinal cord), a unique feature not seen in other ichthyosaurs.2

Ishusho ya Sisteronia yakozwe na AI — Ishusho yakozwe na AI yerekana uko Sisteronia 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.

Ku bazobereye muri dinozore

Izina rya siyansi: Sisteronia
Yiswe na: Fischer et al. 20143
Itsinda: Iktiyozore
Umuryango / ishami: Ophthalmosauridae3
Ishyirwa mu byiciro: Ichthyosauria > Ichthyosauromorpha3
Imyaka y'amabuye: imyaka miliyoni 113 kugeza 94 (Albian / Cenomanian)3
Inzego z'amabuye: Marnes bleues, West Melbury Marly Chalk, Gault3
Ibihugu: Ubwongereza, Ubufaransa, Uburusiya3
Ibisigazwa byanditswe: 6 muri The Paleobiology Database3
Ivumburwa: Sisteronia was named by Fischer and colleagues in 2014, based on fossils from the Cambridge Greensand Member in England and the Vocontian Basin in France.3 1
Biracyagibwaho impaka: Scientists are still debating exactly how diverse late Cretaceous ichthyosaurs were, and whether Sisteronia was part of a broader European hotspot of ichthyosaur diversity.1

Aho amakuru yakuwe

High Diversity in Cretaceous Ichthyosaurs from Europe Prior to Their Extinction (pmc.ncbi.nlm.nih.gov)
Sisteronia (en.wikipedia.org)
Sisteronia in The Paleobiology Database (CC BY 4.0): imyaka, ahantu, inzego z'amabuye, ishyirwa mu byiciro.

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