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Martinectes
Martinectes was a small, fast-swimming marine reptile that lived in the shallow seas of North America during the time of the dinosaurs. It had a short neck, a long snout, and four big flippers that helped it chase after fish and squid.1
ມັນມີຊີວິດຢູ່ເມື່ອໃດ?
ມັນໃຫຍ່ປານໃດ?
ມັນຍາວປານໃດ?
ມັນໜັກປານໃດ?
ຍາວເທົ່າໝາ 2,5 ໂຕຕໍ່ກັນຈາກດັງຫາຫາງ🍌ຍາວເທົ່າກ້ວຍ 14 ໜ່ວຍຕໍ່ກັນ🍉ໜັກເທົ່າໝາກໂມ 250 ໜ່ວຍ🧸ໜັກເທົ່າເດັກອະນຸບານ 67 ຄົນ🎒ໜັກເທົ່ານັກຮຽນ 40 ຄົນ🐻❄️ໜັກເທົ່າໝີຂາວ 3 ໂຕ🏊ລອຍໄດ້ຄວາມຍາວສະລອຍນ້ຳໃຫຍ່ (50 ມ) ໃນ 6,9 ວິນາທີMartinectes ໃຫຍ່ປານໃດ ເມື່ອທຽບກັບເຈົ້າ?
ແຄ່ຄິດໄລ່ໃນບຣາວເຊີຂອງເຈົ້າ. ບໍ່ມີຫຍັງຖືກບັນທຶກ ຫຼື ສົ່ງໄປໃສ.
ມັນໄວປານໃດ?
ເລື່ອງໜ້າຮູ້ມ່ວນໆ
Martinectes was one of the smallest adult polycotylid plesiosaurs ever found, measuring only about 2.3 to 2.6 metres long.1
It had large eyes with a bony ledge above them, which may have shaded its eyes from sunlight while hunting near the water's surface.1
Martinectes lived about 80 million years ago in the Western Interior Seaway, a huge ocean that split North America in two.1
Its name means 'Martin's swimmer', honoring the person who helped discover its fossils.1
Martinectes was originally thought to be a species of Dolichorhynchops, but scientists gave it its own genus in 2024.1
It had unusually wide bones in its spine and a very short back part of its skull, which helped scientists tell it apart from other plesiosaurs.1
ຄຳຖາມທີ່ຖືກຖາມຫຼາຍທີ່ສຸດກ່ຽວກັບ Martinectes
?How big was Martinectes?
Martinectes was a large polycotylid plesiosaur, measuring at least around 5 metres (16 ft) long. Some estimates suggest it could reach up to 6 to 7 metres (20 to 23 ft), while a 2026 estimate put it at about 4.95 metres (16.2 ft) long.2
?Was Martinectes a dinosaur?
No, Martinectes was a plesiosaur, a marine reptile that lived in the seas during the time of the dinosaurs. It was not a dinosaur.2
?What did Martinectes eat?
Martinectes likely chased after fish and squid, using its long snout and four big flippers to swim fast. Its small teeth and narrow jaws suggest it ate small, slippery prey.2
ສຳລັບຜູ້ຊ່ຽວຊານໄດໂນ
- ຊື່ວິທະຍາສາດ
- Martinectes
- ຕັ້ງຊື່ໂດຍ
- Clark et al. 20243
- ກຸ່ມ
- ພລີຊິໂອຊໍ
- ຄອບຄົວ / ເຄລດ
- Polycotylidae3
- ການຈັດໝວດໝູ່
- Plesiosauria > Sauropterygia3
- ອາຍຸຂອງຫີນ
- 84 ຫາ 72 ລ້ານປີ (Campanian)3
- ຊັ້ນຫີນ
- Pierre Shale, Taylor Marl3
- ປະເທດ
- ສະຫະລັດ3
- ບັນທຶກຟອສຊິລ
- 3 ໃນ The Paleobiology Database3
- ການຄົ້ນພົບ
- Martinectes was named in 2024 by Robert O. Clark, F. Robin O'Keefe, and Sara E. Slack. They studied fossils that had been found in Wyoming and South Dakota, USA, and realized they belonged to a new genus.31
- ຍັງຖົກຖຽງກັນຢູ່
- Scientists are still debating exactly how Martinectes used its unusual eye ledges and wide skull for hunting.1
ຂໍ້ມູນມາຈາກໃສ
- A new genus of small polycotylid plesiosaur from the Upper Cretaceous of the Western Interior Seaway and a clarification of the genus Dolichorhynchops (sciencedirect.com)
- Martinectes (en.wikipedia.org)
- Martinectes in The Paleobiology Database (CC BY 4.0): ອາຍຸ, ສະຖານທີ່, ຊັ້ນຫີນ, ການຈັດໝວດໝູ່.
ທຸກຂໍ້ມູນໃນໜ້ານີ້ມີຕົວເລກທີ່ຊີ້ໄປຫາແຫຼ່ງອ້າງອີງ. ຖ້າພວກເຮົາຜິດພາດ, ຂໍໂທດເດີ, ພວກເຮົາເປັນແຟນໄດໂນ ບໍ່ແມ່ນວາລະສານວິທະຍາສາດ. ບອກພວກເຮົາທີ່ [email protected] ແລ້ວພວກເຮົາຈະແກ້ໄຂ.
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