Russellosaurus

Hiika maqaa: “Russell's lizard, after paleontologist Dale Russell”1 2

Kan nyaate: FoonMoosaasarootaKireetaashasii DhumaaSeera saayinsiitiin daayinoosarii miti

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

Odeeffannoo bashannansiisaa: harkifataan galaanaa kun yeroo daayinoosarootni lafa irra deemaa turan daakaa ture. Namni hundi daayinoo jedhee isaan waama, garuu damee harkifattootaa adda ta'e turan.

Kan jiraate

waggaa miliyoona 94 hanga 90 dura4

Kireetaashasii Dhumaa

Fosiliiwwan kan itti argaman

Cedar Hill, Dallas County, Texas, USA4 1

Dheerina

3 m (9.8 ft)3

Ulfaatina

70 kg (154 lb)3

Saffisa ol'aanaa

gara 35 km/sa'a (22 mph)

Daakuu, tilmaama

Yoom jiraate?

Tiraayaasikii

Juraasikii

Kireetaashasii

waggaa miliyoona 252 dura20114566, asteerooyidii

Hammam guddaa ture?

Hammam dheeraa ture?

Hammam ulfaataa ture?

akka saree 4 ulfaata

akka saree 3 funyaan hanga eegeetti dheeraaakka muuzii 17 walitti hiriiran dheeraaakka habxuu 14 ulfaataakka ijoollee KG 4 ulfaataakka ijoollee mana barumsaa 2 ulfaatadheerina bishaan daakaa guddaa (50 m) sekondii 5.1 keessatti daakuu danda'a

SI wajjin yoo wal bira qabamu, Russellosaurus hammam guddaa ture?

Herrega qofa barbaadduu kee keessatti. Wanti tokkollee hin olkaa'amu, eessayyuu hin ergamu.

Hammam saffisaa ture?

Nama miilaan deemu gara 5 km/sa'a (3 mph)

Daa'ima saayikilii irra jiru gara 12 km/sa'a (7 mph)

Russellosaurus gara 35 km/sa'a (22 mph)

Farda gulufu gara 65 km/sa'a (40 mph)

Cheetaa gara 100 km/sa'a (62 mph)

wantoota bareedoo

Odeeffannoowwan bashannansiisoo

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

Fakkii AI'n hojjetame: Russellosaurus — Fakkii AI'n hojjetame kan Russellosaurus maal fakkaachuu akka danda'u agarsiisu, kompiitaraan beekumsa saayintistootaa irratti hundaa'uun hojjetame. Tilmaama qofa: bineensi dhugaa adda ta'ee mul'achuu danda'a, halluu isaa dhugaa immoo namni beeku hin jiru.

Ogeeyyii daayinootiif

Maqaa saayinsii: Russellosaurus
Kan maqaa baase: Polcyn and Bell 20054
Garee: Moosaasaroota
Maatii / kilaadii: Mosasauridae4
Ramaddii: Mosasauroidea4
Umurii dhagaawwanii: waggaa miliyoona 94 hanga 90 (Turonian)4
Caasaawwan dhagaa: Arcadia Park Shale4
Biyyoota: Ameerikaa4
Galmee fosilii: 1 The Paleobiology Database keessa4
Argannoo: 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
Ammallee falmisiisaa: Scientists are not sure exactly how big Russellosaurus grew, because only its skull has been found and no body bones.2

Odeeffannoon eessaa dhufa

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): umurii, bakkeewwan, caasaawwan dhagaa, ramaddii.

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