ካርድ ዳይኖሰር ቁ. 0012 ካብ 2 027

Acamptonectes

ትርጉም ስሙ: “stiff swimmer”1

ይበልዕ ነበረ: ስጋኢክቲዮሰራትመጀመርታ ክሬታሸስብቴክኒክ ዳይኖሰር ኣይኮነን

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

ደስ ዝብል ሓቂ: እዚ ናይ ባሕሪ ተሳሓባይ ዳይኖሰራት ኣብ ምድሪ ክኸዱ ከለዉ ይሕምብስ ነበረ። ኩሉ ሰብ ዳይኖሰር ይብሎም፣ ግን ካልእ ጨንፈር ተሳሓብቲ እዮም ነይሮም።

ዝነበረሉ

ቅድሚ 133 ክሳብ 126 ሚልዮን ዓመት3

መጀመርታ ክሬታሸስ

ፎሲላት ዝተረኽቡሉ

England (Speeton Clay Formation) and Germany1 3

ንውሓት

3 m (9.8 ft)1

ዝለዓለ ቅልጣፈ

ኣስታት 48 ኪ.ሜ/ሰ (30 ማይል/ሰ)

ምሕምባስ, ግምት

መዓስ እዩ ዝነበረ?

ትሪያሲክ

ጁራሲክ

ክሬታሸስ

ቅድሚ 252 ሚልዮን ዓመት20114566፣ እቲ ኣስተሮይድ

ክንደይ ዓቢ ነይሩ?

ክንደይ ነዊሕ ነይሩ?

ከም 3 ኣኽላባት ካብ ኣፍንጫ ክሳብ ጭራ ዝነውሕከም 17 ባናና ተሰሪዑ ዝነውሕንውሓት ዓቢ መሕምበሲ (50 ሜ) ኣብ 3.8 ካልኢት ክሕምብሶ ይኽእል ነበረ

ምሳኻ ክነጻጸር Acamptonectes ክንደይ ዓቢ ነይሩ?

ኣብ ብራውዘርካ ቀሊል ሕሳብ ጥራይ። ዝዕቀብ ወይ ናብ ዝኾነ ቦታ ዝለኣኽ የለን።

ክንደይ ቅልጡፍ ነይሩ?

ዝኸይድ ሰብ ኣስታት 5 ኪ.ሜ/ሰ (3 mph)

ብሽክለታ ዝጋልብ ቆልዓ ኣስታት 12 ኪ.ሜ/ሰ (7 mph)

Acamptonectes ኣስታት 48 ኪ.ሜ/ሰ (30 mph)

ብጉያ ዝኸይድ ፈረስ ኣስታት 65 ኪ.ሜ/ሰ (40 mph)

ቺታ ኣስታት 100 ኪ.ሜ/ሰ (62 mph)

ዘደንቑ ነገራት

ደስ ዝብሉ ሓቅታት

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

ብAI ዝተሰርሐ ስእሊ ናይ Acamptonectes — ብAI ዝተሰርሐ ስእሊ፣ Acamptonectes ከመይ ይመስል ከም ዝነበረ ዘርኢ፣ ኮምፒተር ካብቲ ሳይንቲስታት ዝፈልጥዎ ዝሰርሖ። ግምት እዩ: እቲ ሓቀኛ እንስሳ ፍልይ ዝበለ ክመስል ይኽእል፣ ሓቀኛ ሕብሩ ድማ ዝፈልጦ የለን።

ንስኻ ሓቲትካ

ብዛዕባ Acamptonectes ብብዝሒ ዝሕተቱ ሕቶታት

?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

ጽውጽዋይ ዘፍርስ

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

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

ንክኢላታት ዳይኖሰር

ሳይንሳዊ ስም: Acamptonectes
ዝሰመዮ: Fischer et al. 20123
ጉጅለ: ኢክቲዮሰራት
ስድራ / ክላድ: Ophthalmosauridae3
ምድባ: Ichthyosauria > Ichthyosauromorpha3
ዕድመ እቶም ኣኻውሕ: 133 ክሳብ 126 ሚልዮን ዓመት (Hauterivian)3
ናይ ኣኻውሕ ንብርብራት: Speeton Clay3
ሃገራት: ዓባይ ብሪጣንያ, ጀርመን3
መዛግብቲ ፎሲል: 3 ኣብ The Paleobiology Database3
ርኽበት: 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
ገና ዘከራኽር: 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