Leivanectes

Naam beteken: “Leiva swimmer, named after Villa de Leiva in Colombia”1 2

Het geëet: VleisPlesiosourusseVroeë KrytTegnies nie 'n dinosourus nie

Leivanectes was a long-necked marine reptile that swam in the warm seas of Colombia about 115 million years ago. It was a plesiosaur, not a dinosaur, and it used its strong flippers to paddle through the water. This ocean hunter had a special short jaw with big teeth for catching large fish.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

120 tot 113 miljoen jaar gelede3

Vroeë Kryt

Fossiele gevind in

Villa de Leiva, Boyacá, Colombia (Paja Formation)1 2

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)

Leivanectes 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

Leivanectes had fewer and larger teeth than any other known elasmosaurid plesiosaur. It only had 3 teeth in the front of its lower jaw, while a similar plesiosaur called Callawayasaurus had 5.2

This plesiosaur lived during the Aptian stage of the Early Cretaceous, between about 119 and 113 million years ago.1

Leivanectes was named in 2019 by a team of scientists from Argentina and Colombia, including María Páramo-Fonseca and José O'Gorman.1 2

Its short jaw and big teeth suggest Leivanectes ate larger prey than other long-necked elasmosaurids, which usually ate small fish.2

Leivanectes is only known from a partial skull and lower jaw, so scientists are not sure how big its body was.2

KI-prent van Leivanectes — 'n KI-prent van hoe Leivanectes 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: Leivanectes
Benoem deur: Páramo-Fonseca et al. 20193
Groep: Plesiosourusse
Familie / klade: Elasmosauridae3
Klassifikasie: Plesiosauria > Elasmosauridae > Sauropterygia3
Ouderdom van die rotse: 120 tot 113 miljoen jaar (Aptian)3
Rotsformasies: Paja3
Lande: Colombia3
Fossielrekords: 1 in The Paleobiology Database3
Ontdekking: Leivanectes was discovered in the Paja Formation of Villa de Leiva, Colombia, and named in 2019 by Páramo-Fonseca and colleagues. The species name bernardoi honors a local person named Bernardo.1 2
Steeds omstrede: Scientists are not sure how long Leivanectes' neck was, because only its skull has been found. It might have had a shorter neck than other elasmosaurids.2

Waar die feite vandaan kom

PBDB Taxon (paleobiodb.org)
A new late Aptian elasmosaurid from the Paja Formation, Villa de Leiva, Colombia (explore.openaire.eu)
Leivanectes in The Paleobiology Database (CC BY 4.0): ouderdom, plekke, rotsformasies, klassifikasie.

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