Keilhauia

Igama lithetha: “Keilhau's reptile”1

Yayitya: InyamaIi-ichthyosauriiCretaceous yokuqalaNgokwenene ayisiyo dayinaso

Keilhauia was a dolphin-like marine reptile that lived in the Early Cretaceous, about 145 million years ago. It had large eyes and a long snout, and swam in the shallow seas near what is now Norway. It was about as long as a small car!1

Inyani emnandi: esi sirhubuluzi saselwandle sasiqubha ngelixa iidayinaso zazihamba emhlabeni. Wonke umntu uzibiza ngokuba ziidayinaso, kodwa zazilisebe elahlukileyo lezirhubuluzi.

Yaphila

143 ukuya ku-137 izigidi zeminyaka eyadlulayo3

iCretaceous yokuqala

Iifosili zifunyenwe:

Svalbard, Norway1

Ubude

3.8 ukuya ku-4.3 m (12 ukuya ku-14 ft)1

Esona santya siphezulu

malunga ne-47 km/h (29 mph)

Ukuqubha, uqikelelo

Yaphila nini?

iTriassic

iJurassic

iCretaceous

Izigidi ezingama-252 zeminyaka eyadlulayo20114566, i-asteroyidi

Yayinkulu kangakanani?

Yayinde kangakanani?

inde njengezinja ezingama-4, impumlo ukuya emsileniinde njengeebhanana ezingama-24 zilandelelanaibinokuqubha ubude bechibi elikhulu lokuqubha (50 m) ngemizuzwana engama-3.8

Keilhauia wayemkhulu kangakanani xa ethelekiswa NAWE?

Yimathematika nje kwibhrawuza yakho. Akukho nto igcinwayo okanye ithunyelwe naphi na.

Yayikhawuleza kangakanani?

Umntu ohambayo malunga ne-5 km/h (3 mph)

Umntwana ekhwele ibhayisikile malunga ne-12 km/h (7 mph)

Keilhauia malunga ne-47 km/h (29 mph)

Ihashe elibaleka ngamandla malunga ne-65 km/h (40 mph)

Ingwenkala malunga ne-100 km/h (62 mph)

izinto ezimnandi

Iinyani ezimnandi

Keilhauia is known from only one fossil, discovered in 2010 on the island of Spitsbergen.1

Its species name, nui, comes from the acronym of a Norwegian youth environmental organization called Natur og Ungdom.1

It had a wide top end of its ilium (hip bone) and a short ischiopubis compared to its thigh bone, which helps scientists tell it apart from other ichthyosaurs.1

Keilhauia is the most complete ichthyosaur known from the Berriasian age, the very beginning of the Cretaceous Period.1

Its pelvic girdle is the most complete one ever found from the Cretaceous Period.2

It lived in a shallow sea with an oxygen-poor seafloor, where cold seeps supported many invertebrates like ammonites and brachiopods.1

Umfanekiso owenziwe yi-AI: Keilhauia — Umfanekiso owenziwe yi-AI obonisa indlela Keilhauia esenokuba wayekhangeleka ngayo, wenziwe yikhompyutha ngokwento eyaziwa zizazinzulu. Kukuqikelela nje: esona silwanyana sinokuba sasikhangeleka ngenye indlela, kwaye akukho mntu waziyo imibala yaso yokwenyani.

Kwiingcali zeedayinaso

Igama lenzululwazi: Keilhauia
Inikwe igama ngu:: Delsett et al. 20173
Iqela: Ii-ichthyosauri
Usapho / iclade: Ophthalmosauridae3
Ukuhlelwa: Ichthyosauria > Ichthyosauromorpha3
Ubudala bamatye: 143 ukuya ku-137 izigidi zeminyaka (Berriasian)3
Izakhiwo zamatye: Agardhfjellet3
Amazwe: iSvalbard3
Iirekhodi zeefosili: 1 kwi-Paleobiology Database3
Ukufunyanwa: The first fossil of Keilhauia was found in 2010 by the Spitsbergen Mesozoic Research Group on Svalbard, Norway. Scientists named it in 2017 after the Norwegian geologist Baltazar Mathias Keilhau.1
Kusaxoxwa ngayo: Scientists are unsure exactly how Keilhauia is related to other ichthyosaurs because its skull is not well preserved, so its family tree position is uncertain.1

Apho iinyani zivela khona

Keilhauia (en.wikipedia.org)
A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle (eprints.soton.ac.uk)
Keilhauia in The Paleobiology Database (CC BY 4.0): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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