ບັດໄດໂນ ເລກທີ 0012 ຈາກ 2 027

Acamptonectes

ຊື່ໝາຍຄວາມວ່າ: “stiff swimmer”1

ກິນ: ຊີ້ນອິກທິໂອຊໍຄຣີເທເຊຍສຕອນຕົ້ນຕາມຫຼັກວິຊາການ ບໍ່ແມ່ນໄດໂນເສົາ

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

ເລື່ອງໜ້າຮູ້: ສັດເລືອຄານທະເລໂຕນີ້ລອຍນ້ຳ ໃນຂະນະທີ່ໄດໂນເສົາຍ່າງຢູ່ເທິງບົກ. ທຸກຄົນເອີ້ນພວກມັນວ່າໄດໂນ, ແຕ່ພວກມັນເປັນສັດເລືອຄານອີກສາຍໜຶ່ງ.

ມີຊີວິດຢູ່

133 ຫາ 126 ລ້ານປີກ່ອນ3

ຄຣີເທເຊຍສຕອນຕົ້ນ

ພົບຟອສຊິລທີ່

England (Speeton Clay Formation) and Germany1 3

ຄວາມຍາວ

3 m (9,8 ft)1

ຄວາມໄວສູງສຸດ

ປະມານ 48 ກມ/ຊມ (30 ໄມລ໌/ຊມ)

ລອຍນ້ຳ, ຄ່າປະມານ

ມັນມີຊີວິດຢູ່ເມື່ອໃດ?

ໄທຣແອສຊິກ

ຈູຣາສຊິກ

ຄຣີເທເຊຍສ

252 ລ້ານປີກ່ອນ20114566, ດາວເຄາະນ້ອຍຕົກ

ມັນໃຫຍ່ປານໃດ?

ມັນຍາວປານໃດ?

ຍາວເທົ່າໝາ 3 ໂຕຕໍ່ກັນຈາກດັງຫາຫາງຍາວເທົ່າກ້ວຍ 17 ໜ່ວຍຕໍ່ກັນລອຍໄດ້ຄວາມຍາວສະລອຍນ້ຳໃຫຍ່ (50 ມ) ໃນ 3,8 ວິນາທີ

Acamptonectes ໃຫຍ່ປານໃດ ເມື່ອທຽບກັບເຈົ້າ?

ແຄ່ຄິດໄລ່ໃນບຣາວເຊີຂອງເຈົ້າ. ບໍ່ມີຫຍັງຖືກບັນທຶກ ຫຼື ສົ່ງໄປໃສ.

ມັນໄວປານໃດ?

ຄົນຍ່າງ ປະມານ 5 ກມ/ຊມ (3 mph)

ເດັກຂີ່ລົດຖີບ ປະມານ 12 ກມ/ຊມ (7 mph)

Acamptonectes ປະມານ 48 ກມ/ຊມ (30 mph)

ມ້າກຳລັງຄວບ ປະມານ 65 ກມ/ຊມ (40 mph)

ເສືອຊີຕາ ປະມານ 100 ກມ/ຊມ (62 mph)

ເລື່ອງເທ່ໆ

ເລື່ອງໜ້າຮູ້ມ່ວນໆ

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

ຮູບ Acamptonectes ທີ່ AI ສ້າງ — ຮູບທີ່ AI ສ້າງ ສະແດງວ່າ Acamptonectes ອາດຈະມີໜ້າຕາແນວໃດ, ຄອມພິວເຕີສ້າງຂຶ້ນຈາກສິ່ງທີ່ນັກວິທະຍາສາດຮູ້. ມັນເປັນການຄາດເດົາ: ສັດໂຕແທ້ອາດຈະມີໜ້າຕາຕ່າງອອກໄປ, ແລະ ບໍ່ມີໃຜຮູ້ສີແທ້ຂອງມັນ.

ເຈົ້າຖາມມາ

ຄຳຖາມທີ່ຖືກຖາມຫຼາຍທີ່ສຸດກ່ຽວກັບ 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

ໄຂຄວາມເຊື່ອຜິດ

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

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

ສຳລັບຜູ້ຊ່ຽວຊານໄດໂນ

ຊື່ວິທະຍາສາດ: Acamptonectes
ຕັ້ງຊື່ໂດຍ: Fischer et al. 20123
ກຸ່ມ: ອິກທິໂອຊໍ
ຄອບຄົວ / ເຄລດ: Ophthalmosauridae3
ການຈັດໝວດໝູ່: Ichthyosauria > Ichthyosauromorpha3
ອາຍຸຂອງຫີນ: 133 ຫາ 126 ລ້ານປີ (Hauterivian)3
ຊັ້ນຫີນ: Speeton Clay3
ປະເທດ: ສະຫະລາຊະອານາຈັກ, ເຢຍລະມັນ3
ບັນທຶກຟອສຊິລ: 3 ໃນ The Paleobiology Database3
ການຄົ້ນພົບ: 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
ຍັງຖົກຖຽງກັນຢູ່: 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

ຂໍ້ມູນມາຈາກໃສ

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): ອາຍຸ, ສະຖານທີ່, ຊັ້ນຫີນ, ການຈັດໝວດໝູ່.

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