Avalonnectes

Naam beteken: “Avalon swimmer”1

Het geëet: VleisPlesiosourusseVroeë JuraTegnies nie 'n dinosourus nie

Avalonnectes was a small, early plesiosaur that swam in the seas near what is now England, about 200 million years ago. It had a short body and four flippers, and it was one of the very first plesiosaurs to appear after the Triassic,Jurassic extinction.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

201 tot 200 miljoen jaar gelede4

Vroeë Jura

Fossiele gevind in

Street, Somerset, England, United Kingdom3

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)

Avalonnectes 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

Avalonnectes had only 18 or 19 dorsal vertebrae, which is a very low number for a plesiosaur.1

Its skull was only about 180 mm long, making it one of the smallest plesiosaurs of its time.1

Avalonnectes lived in the earliest Jurassic, just after the Triassic,Jurassic extinction event, about 199.6 to 198 million years ago.3

The name Avalonnectes comes from Avalon, the legendary island of King Arthur, which is linked to Glastonbury near where the fossils were found.1

Avalonnectes is known from two partial skeletons, including the holotype NHMUK 14550, which has part of the skull and much of the body.3

It belonged to a group called Rhomaleosauridae, which were early plesiosaurs with short necks and large heads.2

KI-prent van Avalonnectes — 'n KI-prent van hoe Avalonnectes 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: Avalonnectes
Benoem deur: Benson et al. 20124
Groep: Plesiosourusse
Familie / klade: Rhomaleosauridae4
Klassifikasie: Plesiosauria > Sauropterygia4
Ouderdom van die rotse: 201 tot 200 miljoen jaar (Hettangian)4
Rotsformasies: Blue Lias4
Lande: Verenigde Koninkryk4
Fossielrekords: 1 in The Paleobiology Database4
Ontdekking: Avalonnectes was named in 2012 by Roger Benson and colleagues based on fossils collected in the 19th century from Street, Somerset, England. The species name arturi honors Arthur Cruickshank, a scientist who studied early plesiosaurs.1

Waar die feite vandaan kom

High Diversity, Low Disparity and Small Body Size in Plesiosaurs (Reptilia, Sauropterygia) from the Triassic, Jurassic Boundary | PLOS One (journals.plos.org)
PBDB Taxon (paleobiodb.org)
Avalonnectes (en.wikipedia.org)
Avalonnectes in The Paleobiology Database (CC BY 4.0): ouderdom, plekke, rotsformasies, klassifikasie.

Elke feit op hierdie bladsy het 'n nommer wat na sy bron wys. As ons iets verkeerd het, jammer, ons is dino-aanhangers, nie 'n wetenskapjoernaal nie. Laat weet ons by [email protected] en ons maak dit reg.

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