ካርድ ዳይኖሰር ቁ. 1137 ካብ 2 027

Marambionectes

ትርጉም ስሙ: “Marambio Island swimmer”1

ይበልዕ ነበረ: ስጋፕሌሲዮሰራትዳሕራይ ክሬታሸስብቴክኒክ ዳይኖሰር ኣይኮነን

Marambionectes was a long-necked marine reptile that swam in the seas near Antarctica about 70 million years ago. It was not a dinosaur, but a fierce hunter that used its flippers to glide through the water.1 3

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 72 ክሳብ 66 ሚልዮን ዓመት3

ዳሕራይ ክሬታሸስ

ፎሲላት ዝተረኽቡሉ

Antarctica, on Marambio (Seymour) Island in the López de Bertodano Formation1 3

ዝለዓለ ቅልጣፈ

ኣስታት 27 ኪ.ሜ/ሰ (17 ማይል/ሰ)

ምሕምባስ, ግምት

መዓስ እዩ ዝነበረ?

ትሪያሲክ

ጁራሲክ

ክሬታሸስ

ቅድሚ 252 ሚልዮን ዓመት20114566፣ እቲ ኣስተሮይድ

ክንደይ ቅልጡፍ ነይሩ?

ዝኸይድ ሰብ ኣስታት 5 ኪ.ሜ/ሰ (3 mph)

ብሽክለታ ዝጋልብ ቆልዓ ኣስታት 12 ኪ.ሜ/ሰ (7 mph)

Marambionectes ኣስታት 27 ኪ.ሜ/ሰ (17 mph)

ብጉያ ዝኸይድ ፈረስ ኣስታት 65 ኪ.ሜ/ሰ (40 mph)

ቺታ ኣስታት 100 ኪ.ሜ/ሰ (62 mph)

ዘደንቑ ነገራት

ደስ ዝብሉ ሓቅታት

Marambionectes had 48 neck vertebrae, and the 5th to 29th of these had special side keels, a feature not seen in other elasmosaurids.2

Its lower jaw had three tooth sockets at the front and a wide groove, which helped scientists link it to a group called aristonectines.2

The fossil skeleton was found in 2018 and includes parts of the skull, many vertebrae, ribs, and limb bones, all from an adult animal.1

Scientists think Marambionectes was closely related to the aristonectines, a group of elasmosaurids with short necks and big heads.1 2

The name honors Omar J. Molina, an Argentinian fossil preparator who worked in Antarctica.1

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

ጽውጽዋይ ዘፍርስ

ጽውጽዋይ: Some people think all plesiosaurs were dinosaurs.

ሓቂ: Plesiosaurs like Marambionectes were marine reptiles, not dinosaurs. Dinosaurs lived on land and had different body features.1

ንክኢላታት ዳይኖሰር

ሳይንሳዊ ስም: Marambionectes
ዝሰመዮ: O’Gorman et al. 20243
ጉጅለ: ፕሌሲዮሰራት
ስድራ / ክላድ: Elasmosauridae3
ምድባ: Plesiosauria > Elasmosauridae > Sauropterygia3
ዕድመ እቶም ኣኻውሕ: 72 ክሳብ 66 ሚልዮን ዓመት (Maastrichtian)3
ናይ ኣኻውሕ ንብርብራት: López de Bertodano3
ሃገራት: ኣንታርክቲካ3
መዛግብቲ ፎሲል: 1 ኣብ The Paleobiology Database3
ርኽበት: The fossil was found in 2018 on Marambio Island, Antarctica, and was named by O'Gorman and colleagues in 2024.1 3
ገና ዘከራኽር: Scientists are still debating exactly how Marambionectes is related to other elasmosaurids, especially whether it belongs inside or just outside the aristonectine group.1 2