Sisteronia

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

Raidya: NyamaMaikitiyosauroCretaceous Yekutanga kusvika Cretaceous YekupedzisiraHarisi dhinosori chaizvo

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

Chokwadi chinonakidza: chinokambaira ichi chemugungwa chaishambira madhinosori achifamba panyika. Munhu wese anozviti madhino, asi zvaiva bazi rakasiyana rezvinokambaira.

Raivapo

makore mamiriyoni 113 kusvika 94 apfuura3

Cretaceous Yekutanga kusvika Cretaceous Yekupedzisira

Mafosiri akawanikwa:

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

Kumhanya kwepamusoro

kunenge 46 km/h (29 mph)

Kushambira, fungidziro

Rairarama rini?

Triassic

Jurassic

Cretaceous

makore mamiriyoni 252 apfuura20114566, dombo guru rakabva mudenga

Raimhanya zvakadii?

Munhu achifamba kunenge 5 km/h (3 mph)

Mwana ari pabhasikoro kunenge 12 km/h (7 mph)

Sisteronia kunenge 46 km/h (29 mph)

Bhiza richimhanya kunenge 65 km/h (40 mph)

Dindingwe kunenge 100 km/h (62 mph)

zvinhu zvinonakidza

Zvinonakidza

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

Mufananidzo wakagadzirwa neAI: Sisteronia — Mufananidzo wakagadzirwa neAI unoratidza kuti Sisteronia ringangodai raitaridzika sei, wakagadzirwa nekombiyuta kubva pane zvinozivikanwa nemasayendisiti. Ifungidziro chete: mhuka chaiyo ingangodai yaitaridzika zvakasiyana, uye hapana anoziva mavara ayo chaiwo.

Zvevanyanzvi vemadhino

Zita resainzi: Sisteronia
Akaripa zita:: Fischer et al. 20143
Boka: Maikitiyosauro
Mhuri / boka: Ophthalmosauridae3
Kurongwa kwemhuka: Ichthyosauria > Ichthyosauromorpha3
Zera rematombo: makore mamiriyoni 113 kusvika 94 (Albian / Cenomanian)3
Mapoka ematombo: Marnes bleues, West Melbury Marly Chalk, Gault3
Nyika: United Kingdom, France, Russia3
Zvinyorwa zvemafosiri: 6 mu The Paleobiology Database3
Kuwanikwa: 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
Zvichiri kupokanwa: 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

Kunobva chokwadi

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): zera, nzvimbo, mapoka ematombo, kurongwa kwemhuka.

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