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Acamptonectes

Hiika maqaa: “stiff swimmer”1

Kan nyaate: FoonIkteyoosarootaKireetaashasii JalqabaaSeera saayinsiitiin daayinoosarii miti

Acamptonectes was a fast-swimming marine reptile that lived in the Early Cretaceous seas. It had a stiff body and large eyes, perfect for hunting fish and squid in the deep ocean.1 2

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 133 hanga 126 dura3

Kireetaashasii Jalqabaa

Fosiliiwwan kan itti argaman

England (Speeton Clay Formation) and Germany1 3

Dheerina

3 m (9.8 ft)1

Saffisa ol'aanaa

gara 48 km/sa'a (30 mph)

Daakuu, tilmaama

Yoom jiraate?

Tiraayaasikii

Juraasikii

Kireetaashasii

waggaa miliyoona 252 dura20114566, asteerooyidii

Hammam guddaa ture?

Hammam dheeraa ture?

akka saree 3 funyaan hanga eegeetti dheeraaakka muuzii 17 walitti hiriiran dheeraadheerina bishaan daakaa guddaa (50 m) sekondii 3.8 keessatti daakuu danda'a

SI wajjin yoo wal bira qabamu, Acamptonectes 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)

Acamptonectes gara 48 km/sa'a (30 mph)

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

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

wantoota bareedoo

Odeeffannoowwan bashannansiisoo

Acamptonectes belongs to a group called ophthalmosaurids, which had very large eyes for seeing in dark, deep water.1 2

Its name means 'stiff swimmer' because its body was unusually rigid, helping it move fast through the water.1

Acamptonectes lived about 133 to 129 million years ago, during the Hauterivian stage of the Early Cretaceous.1

Scientists once thought most ichthyosaurs died out at the end of the Jurassic, but Acamptonectes shows they survived and thrived into the Cretaceous.2 1

The first Acamptonectes fossil was found in 1958 by geology students near Speeton, England, but it was not named until 2012.2 1

Its teeth had tiny ridges along the length, which helped it grip slippery prey like fish and squid.1

Fakkii AI'n hojjetame: Acamptonectes — Fakkii AI'n hojjetame kan Acamptonectes 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.

ati gaafatte

Gaaffiiwwan waa'ee Acamptonectes baay'ee gaafataman

?Was Acamptonectes a dinosaur?

No, it was a marine reptile called an ichthyosaur, not a dinosaur.1

?How big was Acamptonectes?

It was about 3 metres (9.8 feet) long.1

?What did Acamptonectes eat?

It likely ate soft, fleshy prey like fish and squid, using its slender ridged teeth to impale them.1

?Why did Acamptonectes have a stiff body?

Its stiff body helped it swim fast like a tuna by making it more streamlined in the water.1

Seenaa sobaa diigaa

Seenaa sobaa: Many people think all ichthyosaurs went extinct at the end of the Jurassic.

Dhugaa: Acamptonectes and other ophthalmosaurids lived well into the Cretaceous, showing no mass extinction at that time.2 1

Ogeeyyii daayinootiif

Maqaa saayinsii: Acamptonectes
Kan maqaa baase: Fischer et al. 20123
Garee: Ikteyoosaroota
Maatii / kilaadii: Ophthalmosauridae3
Ramaddii: Ichthyosauria > Ichthyosauromorpha3
Umurii dhagaawwanii: waggaa miliyoona 133 hanga 126 (Hauterivian)3
Caasaawwan dhagaa: Speeton Clay3
Biyyoota: Biriteen, Jarmanii3
Galmee fosilii: 3 The Paleobiology Database keessa3
Argannoo: Acamptonectes was named in 2012 by a team of scientists including V. Fischer, M. W. Maisch, and D. Naish. The first specimen was collected in 1958 by geology students in Speeton, England, but it took decades to study and describe.2 3
Ammallee falmisiisaa: Scientists are still debating whether Acamptonectes had a different diet or lifestyle from other Cretaceous ichthyosaurs because of its unusual shallow snout and tooth shape.1

Odeeffannoon eessaa dhufa

Acamptonectes (en.wikipedia.org)
New Ophthalmosaurid Ichthyosaurs from the European Lower Cretaceous Demonstrate Extensive Ichthyosaur Survival across the Jurassic, Cretaceous Boundary (pmc.ncbi.nlm.nih.gov)
Acamptonectes in The Paleobiology Database (CC BY 4.0): umurii, bakkeewwan, caasaawwan dhagaa, ramaddii.

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