Dinokaart nr. 1552 van 2 027

Rikisaurus

Naam beteken: “Riki's lizard”3

Het geëet: VleisMosasourusseLaat KrytTegnies nie 'n dinosourus nie

Rikisaurus was a marine lizard that swam in the warm seas near New Zealand about 80 million years ago. It was a mosasaur, a relative of today's monitor lizards, but with flippers instead of legs. This predator hunted fish and other sea creatures with its long, pointed snout and many small teeth.3 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

84 tot 66 miljoen jaar gelede3

Laat Kryt

Fossiele gevind in

Mangahouanga Stream, Hawke's Bay, North Island, New Zealand3 1

Lengte

2 tot 3 m (6,6 tot 9,8 ft)1

Topspoed

omtrent 33 km/h (21 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 3 honde van neus tot stertso lank soos 17 piesangs punt aan puntkon die lengte van 'n groot swembad (50 m) in 5,5 sekondes swem

Hoe groot was Rikisaurus 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)

Rikisaurus omtrent 33 km/h (21 mph)

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

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

cool goed

Prettige feite

Rikisaurus had a very long, slender snout that tapered to a point, and its upper jaw had 13 or 14 teeth on each side.1

Its teeth were small, with two ridges (bicarinate), and the enamel was smooth.1

The lower jaw had 15 or 16 teeth and deepened in the middle, giving it a semicircular bump (coronoid).1

Rikisaurus is known from only one fossil: a skull and four neck bones found in New Zealand.1

It lived between 83.6 and 66 million years ago, during the Campanian and Maastrichtian ages of the Late Cretaceous.1

Scientists think Rikisaurus was a small adult mosasaur, about the size of a modern dolphin.1

KI-prent van Rikisaurus — 'n KI-prent van hoe Rikisaurus 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.

julle het gevra

Mees gevraagde vrae oor Rikisaurus

?Is Rikisaurus a dinosaur?

No, it is a mosasaur, a marine reptile related to today's monitor lizards, not a dinosaur.2 3

?How big was Rikisaurus?

It was a small adult mosasaur, about the size of a modern dolphin, though exact length is not given in the sources.3

?What did Rikisaurus eat?

It was a carnivore that hunted fish and other sea creatures with its long, pointed snout and many small teeth.3

?Where was Rikisaurus found?

Its only known fossil, a skull and four neck bones, was found in the Mangahouanga Stream in New Zealand.3

Vir dino-kenners

Wetenskaplike naam: Rikisaurus
Benoem deur: Wiffen 19903
Groep: Mosasourusse
Familie / klade: Mosasauridae3
Klassifikasie: Mosasauroidea3
Ouderdom van die rotse: 84 tot 66 miljoen jaar (Campanian / Maastrichtian)3
Rotsformasies: Tahora3
Lande: Nieu-Seeland3
Fossielrekords: 1 in The Paleobiology Database3
Ontdekking: Rikisaurus was named by paleontologist J. Wiffen in 1990, based on a skull and neck bones found in the Tahora Formation of New Zealand.3 1
Steeds omstrede: Scientists are not sure exactly how big Rikisaurus grew, because only one skull has been found.1

Waar die feite vandaan kom

PBDB Taxon (paleobiodb.org)
Moanasaurus (Wikipedia) (Wikipedia)
Rikisaurus in The Paleobiology Database (CC BY 4.0): ouderdom, plekke, rotsformasies, klassifikasie.

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