Ophthalmothule

Leina le raya: “eye of the north”1 2

E jele: NamaDipleisiosoroBofelo jwa Jurassic go ya go Tshimologo ya CretaceousKa saense, ga se dinosoro

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

Ntlha e e monate: segagabi seno sa lewatle se ne se thuma fa dinosoro di ne di tsamaya mo lefatsheng. Mongwe le mongwe o di bitsa didino, mme e ne e le lekala le lengwe la digagabi.

E tshetse

dimilione tsa dingwaga di le 149 go ya go 137 tse di fetileng4

Bofelo jwa Jurassic go ya go Tshimologo ya Cretaceous

Difosili di fitlhetswe kwa

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

Boleele

5 go ya go 5.5 m (16 go ya go 18 ft)1 2

Bonako jo bogolo

e ka nna 28 km/h (17 mph)

Go thuma, kakanyo

E tshetse leng?

Triassic

Jurassic

Cretaceous

dimilione tsa dingwaga di le 252 tse di fetileng20114566, asteroiti

E ne e le kgolo go le kae?

E ne e le telele go le kae?

telele jaaka dintšwa di le 6 go tswa kwa nkong go ya kwa mogatlengtelele jaaka dibanana di le 31 di latelanae ne e ka thuma boleele jwa letamo le legolo la go thuma (50 m) mo metsotswaneng e le 6.4

Ophthalmothule e ne e le kgolo go le kae fa e bapisiwa le WENA?

Ke dipalo fela mo sebatling sa gago. Ga go sepe se se bolokwang kgotsa se se romelwang gope.

E ne e le bonako go le kae?

Motho yo o tsamayang e ka nna 5 km/h (3 mph)

Ngwana mo baesekeleng e ka nna 12 km/h (7 mph)

Ophthalmothule e ka nna 28 km/h (17 mph)

Pitse e e sianang ka bonako e ka nna 65 km/h (40 mph)

Lengau e ka nna 100 km/h (62 mph)

dilo tse di monate

Dintlha tse di monate

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

Setshwantsho sa Ophthalmothule se se dirilweng ke AI — Setshwantsho se se dirilweng ke AI sa kafa Ophthalmothule e ka tswang e ne e lebega ka gone, se dirilwe ke khomputara go ya ka se borasaense ba se itseng. Ke kakanyo fela: phologolo ya nnete e ka tswa e ne e lebega ka tsela e sele, mme ga go ope yo o itseng mebala ya yona ya nnete.

Ya baitseanape ba didino

Leina la saense: Ophthalmothule
Leina le neilwe ke: Roberts et al. 20204
Setlhopha: Dipleisiosoro
Lelapa / clade: Cryptoclididae4
Thulaganyo: Plesiosauria > Sauropterygia4
Bogolo jwa matlapa: 149 go ya go 137 dimilione tsa dingwaga (Tithonian / Berriasian)4
Dibopego tsa matlapa: Agardhfjellet4
Dinaga: Noreweye4
Direkoto tsa difosili: 1 mo The Paleobiology Database4
Go fitlhelwa: 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
Go sa ntse go ganetsanwa: 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

Kwa dintlha di tswang teng

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): dingwaga, mafelo, dibopego tsa matlapa, thulaganyo.

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