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Karata ya dino No. 0012 mo go 2 027

Acamptonectes

Leina le raya: “stiff swimmer”1

E jele: NamaDiikhithiosoroTshimologo ya CretaceousKa saense, ga se dinosoro

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

Ntlha e e monate: segagabi seno sa lewatle se ne se thuma fa dinosoro di ne di tsamaya mo lefatsheng. Mongwe le mongwe o di bitsa didino, mme e ne e le lekala le lengwe la digagabi.

E tshetse

dimilione tsa dingwaga di le 133 go ya go 126 tse di fetileng3

Tshimologo ya Cretaceous

Difosili di fitlhetswe kwa

England (Speeton Clay Formation) and Germany1 3

Boleele

3 m (9.8 ft)1

Bonako jo bogolo

e ka nna 48 km/h (30 mph)

Go thuma, kakanyo

E tshetse leng?

Triassic

Jurassic

Cretaceous

dimilione tsa dingwaga di le 252 tse di fetileng20114566, asteroiti

E ne e le kgolo go le kae?

E ne e le telele go le kae?

telele jaaka dintšwa di le 3 go tswa kwa nkong go ya kwa mogatlengtelele jaaka dibanana di le 17 di latelanae ne e ka thuma boleele jwa letamo le legolo la go thuma (50 m) mo metsotswaneng e le 3.8

Acamptonectes e ne e le kgolo go le kae fa e bapisiwa le WENA?

Ke dipalo fela mo sebatling sa gago. Ga go sepe se se bolokwang kgotsa se se romelwang gope.

E ne e le bonako go le kae?

Motho yo o tsamayang e ka nna 5 km/h (3 mph)

Ngwana mo baesekeleng e ka nna 12 km/h (7 mph)

Acamptonectes e ka nna 48 km/h (30 mph)

Pitse e e sianang ka bonako e ka nna 65 km/h (40 mph)

Lengau e ka nna 100 km/h (62 mph)

dilo tse di monate

Dintlha tse di monate

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

Setshwantsho sa Acamptonectes se se dirilweng ke AI — Setshwantsho se se dirilweng ke AI sa kafa Acamptonectes e ka tswang e ne e lebega ka gone, se dirilwe ke khomputara go ya ka se borasaense ba se itseng. Ke kakanyo fela: phologolo ya nnete e ka tswa e ne e lebega ka tsela e sele, mme ga go ope yo o itseng mebala ya yona ya nnete.

o botsitse

Dipotso tse di botswang thata ka ga Acamptonectes

?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

Mothubi wa ditlhamane

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

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

Ya baitseanape ba didino

Leina la saense: Acamptonectes
Leina le neilwe ke: Fischer et al. 20123
Setlhopha: Diikhithiosoro
Lelapa / clade: Ophthalmosauridae3
Thulaganyo: Ichthyosauria > Ichthyosauromorpha3
Bogolo jwa matlapa: 133 go ya go 126 dimilione tsa dingwaga (Hauterivian)3
Dibopego tsa matlapa: Speeton Clay3
Dinaga: Bogosi jo bo Kopaneng, Jeremane3
Direkoto tsa difosili: 3 mo The Paleobiology Database3
Go fitlhelwa: 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
Go sa ntse go ganetsanwa: 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

Kwa dintlha di tswang teng

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): dingwaga, mafelo, dibopego tsa matlapa, thulaganyo.

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