Ophthalmothule

Naam beteken: “eye of the north”1 2

Het geëet: VleisPlesiosourusseLaat Jura tot Vroeë KrytTegnies nie 'n dinosourus nie

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

Prettige feit: hierdie seereptiel het geswem terwyl dinosourusse op land geloop het. Almal noem hulle dino's, maar hulle was 'n ander tak van die reptiele.

Het geleef

149 tot 137 miljoen jaar gelede4

Laat Jura tot Vroeë Kryt

Fossiele gevind in

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

Lengte

5 tot 5,5 m (16 tot 18 ft)1 2

Topspoed

omtrent 28 km/h (17 mph)

Swem, skatting

Wanneer het dit geleef?

Trias

Jura

Kryt

252 miljoen jaar gelede20114566, die asteroïde

Hoe groot was dit?

Hoe lank was dit?

so lank soos 6 honde van neus tot stertso lank soos 31 piesangs punt aan puntkon die lengte van 'n groot swembad (50 m) in 6,4 sekondes swem

Hoe groot was Ophthalmothule vergeleke met JOU?

Net wiskunde in jou blaaier. Niks word gestoor of êrens heen gestuur nie.

Hoe vinnig was dit?

'n Mens wat loop omtrent 5 km/h (3 mph)

'n Kind op 'n fiets omtrent 12 km/h (7 mph)

Ophthalmothule omtrent 28 km/h (17 mph)

'n Galopperende perd omtrent 65 km/h (40 mph)

'n Jagluiperd omtrent 100 km/h (62 mph)

cool goed

Prettige feite

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

KI-prent van Ophthalmothule — 'n KI-prent van hoe Ophthalmothule dalk gelyk het, deur 'n rekenaar gemaak uit wat wetenskaplikes weet. Dit is 'n raaiskoot: die regte dier het dalk anders gelyk, en niemand weet wat sy regte kleure was nie.

Vir dino-kenners

Wetenskaplike naam: Ophthalmothule
Benoem deur: Roberts et al. 20204
Groep: Plesiosourusse
Familie / klade: Cryptoclididae4
Klassifikasie: Plesiosauria > Sauropterygia4
Ouderdom van die rotse: 149 tot 137 miljoen jaar (Tithonian / Berriasian)4
Rotsformasies: Agardhfjellet4
Lande: Noorweë4
Fossielrekords: 1 in The Paleobiology Database4
Ontdekking: 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
Steeds omstrede: 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

Waar die feite vandaan kom

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): ouderdom, plekke, rotsformasies, klassifikasie.

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