Ophthalmothule

Hiika maqaa: “eye of the north”1 2

Kan nyaate: FoonPileesiyoosarootaJuraasikii Dhumaa hanga Kireetaashasii JalqabaaSeera saayinsiitiin daayinoosarii miti

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

Odeeffannoo bashannansiisaa: harkifataan galaanaa kun yeroo daayinoosarootni lafa irra deemaa turan daakaa ture. Namni hundi daayinoo jedhee isaan waama, garuu damee harkifattootaa adda ta'e turan.

Kan jiraate

waggaa miliyoona 149 hanga 137 dura4

Juraasikii Dhumaa hanga Kireetaashasii Jalqabaa

Fosiliiwwan kan itti argaman

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

Dheerina

5 hanga 5.5 m (16 hanga 18 ft)1 2

Saffisa ol'aanaa

gara 28 km/sa'a (17 mph)

Daakuu, tilmaama

Yoom jiraate?

Tiraayaasikii

Juraasikii

Kireetaashasii

waggaa miliyoona 252 dura20114566, asteerooyidii

Hammam guddaa ture?

Hammam dheeraa ture?

akka saree 6 funyaan hanga eegeetti dheeraaakka muuzii 31 walitti hiriiran dheeraadheerina bishaan daakaa guddaa (50 m) sekondii 6.4 keessatti daakuu danda'a

SI wajjin yoo wal bira qabamu, Ophthalmothule hammam guddaa ture?

Herrega qofa barbaadduu kee keessatti. Wanti tokkollee hin olkaa'amu, eessayyuu hin ergamu.

Hammam saffisaa ture?

Nama miilaan deemu gara 5 km/sa'a (3 mph)

Daa'ima saayikilii irra jiru gara 12 km/sa'a (7 mph)

Ophthalmothule gara 28 km/sa'a (17 mph)

Farda gulufu gara 65 km/sa'a (40 mph)

Cheetaa gara 100 km/sa'a (62 mph)

wantoota bareedoo

Odeeffannoowwan bashannansiisoo

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

Fakkii AI'n hojjetame: Ophthalmothule — Fakkii AI'n hojjetame kan Ophthalmothule maal fakkaachuu akka danda'u agarsiisu, kompiitaraan beekumsa saayintistootaa irratti hundaa'uun hojjetame. Tilmaama qofa: bineensi dhugaa adda ta'ee mul'achuu danda'a, halluu isaa dhugaa immoo namni beeku hin jiru.

Ogeeyyii daayinootiif

Maqaa saayinsii: Ophthalmothule
Kan maqaa baase: Roberts et al. 20204
Garee: Pileesiyoosaroota
Maatii / kilaadii: Cryptoclididae4
Ramaddii: Plesiosauria > Sauropterygia4
Umurii dhagaawwanii: waggaa miliyoona 149 hanga 137 (Tithonian / Berriasian)4
Caasaawwan dhagaa: Agardhfjellet4
Biyyoota: Noorwey4
Galmee fosilii: 1 The Paleobiology Database keessa4
Argannoo: 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
Ammallee falmisiisaa: 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

Odeeffannoon eessaa dhufa

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): umurii, bakkeewwan, caasaawwan dhagaa, ramaddii.

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