Spitrasaurus

Naam beteken: “Spitsbergen Travel lizard, after the travel company Spitra that supported the research”1

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

Spitrasaurus was a long-necked marine reptile that swam in the Jurassic seas. It had an incredibly long neck with at least 60 vertebrae, more than most other plesiosaurs. It lived in the cold waters near what is now Svalbard, Norway.1

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 143 miljoen jaar gelede2

Laat Jura tot Vroeë Kryt

Fossiele gevind in

Janusfjellet, Spitsbergen, Svalbard, Norway1

Topspoed

omtrent 27 km/h (17 mph)

Swem, skatting

Wanneer het dit geleef?

Trias

Jura

Kryt

252 miljoen jaar gelede20114566, die asteroïde

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)

Spitrasaurus omtrent 27 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

Spitrasaurus had at least 60 neck bones (cervical vertebrae), which is more than most other Jurassic plesiosaurs. Only some Cretaceous elasmosaurids had more.1

The neck bones of Spitrasaurus had a prominent ridge on the side, a feature not seen in many related plesiosaurs like Djupedalia or Kimmerosaurus.1

Two species of Spitrasaurus have been named: S. wensaasi and S. larseni. They differ in the shape of their neck bones and ribs.1

The first specimen of Spitrasaurus (S. wensaasi) was a juvenile, because its vertebrae were not fully fused. It was preserved lying on its back in black mudstone.1

Spitrasaurus lived about 149 to 143 million years ago, during the Tithonian stage of the Jurassic period. Its fossils were found in the Slottsmøya Member of the Agardhfjellet Formation.2 1

The name Spitrasaurus honors Spitsbergen Travel, a local travel company that helped support the research.1

KI-prent van Spitrasaurus — 'n KI-prent van hoe Spitrasaurus 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: Spitrasaurus
Benoem deur: Knutsen et al. 20122
Groep: Plesiosourusse
Familie / klade: Cryptoclididae2
Klassifikasie: Plesiosauria > Sauropterygia2
Ouderdom van die rotse: 149 tot 143 miljoen jaar (Tithonian)2
Rotsformasies: Agardhfjellet2
Lande: Noorweë2
Fossielrekords: 2 in The Paleobiology Database2
Ontdekking: Spitrasaurus was named in 2012 by Espen Knutsen, Patrick Druckenmiller, and Jørn Hurum. The fossils were found on the north slope of Janusfjellet mountain on Spitsbergen, Svalbard, Norway.2 1
Steeds omstrede: Scientists are not sure exactly how long Spitrasaurus was, because no complete skeleton has been found. The known specimens are missing parts of the tail and skull.1

Waar die feite vandaan kom

Two new species of long-necked plesiosaurians (Reptilia: Sauropterygia) from the Upper Jurassic (Middle Volgian) Agardhfjellet Formation of central Spitsbergen (geologi.no)
Spitrasaurus in The Paleobiology Database (CC BY 4.0): ouderdom, plekke, rotsformasies, klassifikasie.

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