Ophthalmothule

Igama lithetha: “eye of the north”1 2

Yayitya: InyamaIiplesiosauriiJurassic yamva ukuya ku-iCretaceous yokuqalaNgokwenene ayisiyo dayinaso

Ophthalmothule was a plesiosaur, a marine reptile that lived in the sea, not a dinosaur. It had huge eye sockets, so it probably hunted in dark or deep water. This medium-sized swimmer was about as long as a car.1 2

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

Yaphila

149 ukuya ku-137 izigidi zeminyaka eyadlulayo4

iJurassic yamva ukuya ku-iCretaceous yokuqala

Iifosili zifunyenwe:

Spitsbergen, Norway (Slottsmøya Member, Agardhfjellet Formation)2 1

Ubude

5 ukuya ku-5.5 m (16 ukuya ku-18 ft)1 2

Esona santya siphezulu

malunga ne-28 km/h (17 mph)

Ukuqubha, uqikelelo

Yaphila nini?

iTriassic

iJurassic

iCretaceous

Izigidi ezingama-252 zeminyaka eyadlulayo20114566, i-asteroyidi

Yayinkulu kangakanani?

Yayinde kangakanani?

inde njengezinja ezingama-6, impumlo ukuya emsileniinde njengeebhanana ezingama-31 zilandelelanaibinokuqubha ubude bechibi elikhulu lokuqubha (50 m) ngemizuzwana engama-6.4

Ophthalmothule 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)

Ophthalmothule malunga ne-28 km/h (17 mph)

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

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

izinto ezimnandi

Iinyani ezimnandi

Ophthalmothule lived right at the end of the Jurassic and start of the Cretaceous, about 149 to 137 million years ago.3

Its name means 'eye of the north' because it had very large eye sockets and was found in the far north.1 2

This plesiosaur is one of the youngest cryptoclidids known from the Boreal region, along with Abyssosaurus.1 2

The holotype specimen includes a nearly complete skull and parts of the body, which is rare for cryptoclidid plesiosaurs.2

Ophthalmothule had a long neck with all its neck bones found still connected, helping scientists study how plesiosaurs moved their necks.2

Its large eyes may have helped it see better in dim light, either in deep water or while hunting at night.1 2

Umfanekiso owenziwe yi-AI: Ophthalmothule — Umfanekiso owenziwe yi-AI obonisa indlela Ophthalmothule 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: Ophthalmothule
Inikwe igama ngu:: Roberts et al. 20204
Iqela: Iiplesiosauri
Usapho / iclade: Cryptoclididae4
Ukuhlelwa: Plesiosauria > Sauropterygia4
Ubudala bamatye: 149 ukuya ku-137 izigidi zeminyaka (Tithonian / Berriasian)4
Izakhiwo zamatye: Agardhfjellet4
Amazwe: iNorway4
Iirekhodi zeefosili: 1 kwi-Paleobiology Database4
Ukufunyanwa: Ophthalmothule was named in 2020 by Roberts and colleagues. The fossil was dug up in 2012 from Mount Wiman on Spitsbergen, Norway, from rocks that span the Jurassic-Cretaceous boundary.2 3
Kusaxoxwa ngayo: Scientists are not sure whether the Ophthalmothule fossil comes from the very end of the Jurassic or the very beginning of the Cretaceous, because the rock layers are very compressed.2

Apho iinyani zivela khona

Ophthalmothule (en.wikipedia.org)
PeerJ A new plesiosaurian from the Jurassic, Cretaceous transitional interval of the Slottsmøya Member (Volgian), with insights into the cranial anatomy of cryptoclidids using computed tomography (peerj.com)
PBDB Taxon (paleobiodb.org)
Ophthalmothule in The Paleobiology Database (CC BY 4.0): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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