Dinokaart nr. 1565 van 2 027

Russellosaurus

Naam beteken: “Russell's lizard, after paleontologist Dale Russell”1 2

Het geëet: VleisMosasourusseLaat KrytTegnies nie 'n dinosourus nie

Russellosaurus was an ancient marine lizard that swam in the warm seas of Texas about 92 million years ago. It was a fast hunter with a long, slender skull and lots of sharp teeth. Even though it looked a bit like a dinosaur, it was actually a mosasaur, a relative of today's monitor lizards!1 4

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

94 tot 90 miljoen jaar gelede4

Laat Kryt

Fossiele gevind in

Cedar Hill, Dallas County, Texas, USA4 1

Lengte

3 m (9,8 ft)3

Gewig

70 kg (154 lb)3

Topspoed

omtrent 35 km/h (22 mph)

Swem, skatting

Wanneer het dit geleef?

Trias

Jura

Kryt

252 miljoen jaar gelede20114566, die asteroïde

Hoe groot was dit?

Hoe lank was dit?

Hoe swaar was dit?

so swaar soos 4 honde

so lank soos 3 honde van neus tot stertso lank soos 17 piesangs punt aan puntso swaar soos 14 waatlemoeneso swaar soos 4 kleuterskoolkindersso swaar soos 2 skoolkinderskon die lengte van 'n groot swembad (50 m) in 5,1 sekondes swem

Hoe groot was Russellosaurus 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)

Russellosaurus omtrent 35 km/h (22 mph)

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

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

cool goed

Prettige feite

Russellosaurus is the oldest well-preserved mosasaur skull ever found in North America, at about 92 million years old.1 2

The only known fossil is a nearly complete skull, found in 1992 by a fossil hunter named Mark Cohen at a housing construction site.1 2

This mosasaur was small and lightly built, with a narrow skull and 16 teeth on each side of its upper and lower jaws.2

The skull bones were not fully fused together, and the bone surface had lots of blood vessels, showing the animal was still growing fast when it died.1 2

Russellosaurus is the name-giver for a whole group of mosasaurs called Russellosaurina, which includes the famous Tylosaurus and Plioplatecarpus.1 2

It lived alongside another early mosasaur called Dallasaurus, which still had legs and could probably walk on land.2

KI-prent van Russellosaurus — 'n KI-prent van hoe Russellosaurus 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: Russellosaurus
Benoem deur: Polcyn and Bell 20054
Groep: Mosasourusse
Familie / klade: Mosasauridae4
Klassifikasie: Mosasauroidea4
Ouderdom van die rotse: 94 tot 90 miljoen jaar (Turonian)4
Rotsformasies: Arcadia Park Shale4
Lande: VSA4
Fossielrekords: 1 in The Paleobiology Database4
Ontdekking: Russellosaurus was named in 2005 by paleontologists Michael Polcyn and G.L. Bell. The skull was discovered in 1992 by Mark Cohen, a member of the Dallas Paleontological Society, at a housing construction site in Cedar Hill, Texas.1 2
Steeds omstrede: Scientists are not sure exactly how big Russellosaurus grew, because only its skull has been found and no body bones.2

Waar die feite vandaan kom

Russellosaurus (en.wikipedia.org)
Russellosaurus coheni n. gen., n. sp., a 92 million-year-old mosasaur from Texas (USA), and the definition of the parafamily Russellosaurina (cambridge.org)
Russellosaurus (books.eshikshya.org)
Russellosaurus in The Paleobiology Database (CC BY 4.0): ouderdom, plekke, rotsformasies, klassifikasie.

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