ບັດໄດໂນ ເລກທີ 0900 ຈາກ 2 027

Janavis

ຊື່ໝາຍຄວາມວ່າ: “Janus bird, after the Roman god of beginnings and endings”1

ກິນ: ຊີ້ນນົກຍຸກແລກຄຣີເທເຊຍສຕອນປາຍ

Janavis was a toothed bird that lived right at the end of the Age of Dinosaurs. It was one of the last birds with teeth, and its skull could move like a modern bird's skull.1

ມີຊີວິດຢູ່

72 ຫາ 66 ລ້ານປີກ່ອນ3

ຄຣີເທເຊຍສຕອນປາຍ

ພົບຟອສຊິລທີ່

Eben Emael, Belgium1

ຄວາມກວ້າງຂອງປີກ

1,5 m (4,9 ft)1

ນ້ຳໜັກ

1,12 kg ຫາ 1,604 kg (2 ຫາ 4 lb)1

ຄວາມໄວສູງສຸດ

ປະມານ 42 ກມ/ຊມ (26 ໄມລ໌/ຊມ)

ບິນໄດ້, ຄ່າປະມານ

ມັນມີຊີວິດຢູ່ເມື່ອໃດ?

ໄທຣແອສຊິກ

ຈູຣາສຊິກ

ຄຣີເທເຊຍສ

252 ລ້ານປີກ່ອນ20114566, ດາວເຄາະນ້ອຍຕົກ

ມັນໃຫຍ່ປານໃດ?

ປີກຂອງມັນກວ້າງປານໃດ?

ມັນໜັກປານໃດ?

ໜັກເທົ່າກ້ວຍ 13 ໜ່ວຍ

ຍາວເທົ່າແມວບ້ານ 3 ໂຕຕໍ່ກັນຈາກດັງຫາຫາງເບົາກວ່າແມວບ້ານໜັກເທົ່າກ້ວຍ 13 ໜ່ວຍບິນຂ້າມສະໜາມບານເຕະທັງສະໜາມໄດ້ໃນ 9 ວິນາທີ

Janavis ໃຫຍ່ປານໃດ ເມື່ອທຽບກັບເຈົ້າ?

ແຄ່ຄິດໄລ່ໃນບຣາວເຊີຂອງເຈົ້າ. ບໍ່ມີຫຍັງຖືກບັນທຶກ ຫຼື ສົ່ງໄປໃສ.

ມັນໄວປານໃດ?

ຄົນຍ່າງ ປະມານ 5 ກມ/ຊມ (3 mph)

ເດັກຂີ່ລົດຖີບ ປະມານ 12 ກມ/ຊມ (7 mph)

Janavis ປະມານ 42 ກມ/ຊມ (26 mph)

ມ້າກຳລັງຄວບ ປະມານ 65 ກມ/ຊມ (40 mph)

ເສືອຊີຕາ ປະມານ 100 ກມ/ຊມ (62 mph)

ເລື່ອງເທ່ໆ

ເລື່ອງໜ້າຮູ້ມ່ວນໆ

Janavis lived about 66.8 million years ago, just 800,000 years before the asteroid that killed the dinosaurs.1

Its wing bones were hollow and filled with air, like modern birds, making it lighter for flying.1

The fossil was found in a Belgian quarry in 2000 by an amateur fossil hunter named Rudi Dortangs.1

Janavis had a skull that could move its upper jaw up and down, a feature of modern birds called neognathous palate.1

Scientists first thought a piece of its skull was a wing bone, until a CT scan in 2021 showed the truth.1

Janavis was bigger than its relative Ichthyornis, with a wingspan of about 1.5 metres (5 feet).1

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

ເຈົ້າຖາມມາ

ຄຳຖາມທີ່ຖືກຖາມຫຼາຍທີ່ສຸດກ່ຽວກັບ Janavis

?How big was Janavis?

Janavis was a relatively large bird, with an estimated wingspan of about 1.5 metres (5 feet) and a weight of around 1.5 kilograms (3.3 pounds).1 2

?Did Janavis have teeth?

Yes, Janavis had teeth. It was one of the last toothed birds to ever live.1 2

?When did Janavis live?

Janavis lived about 66.8 million years ago, right at the end of the Cretaceous period, just 800,000 years before the asteroid impact.1

?Could Janavis fly?

Yes, Janavis could fly. Its wing bones were hollow and filled with air, like modern birds, making it lighter for flying.1

ໄຂຄວາມເຊື່ອຜິດ

ຄວາມເຊື່ອຜິດ: All ancient birds had rigid skulls like dinosaurs.

ຄວາມຈິງ: Janavis had a flexible skull like modern chickens and ducks, showing that movable skulls evolved early.1

ສຳລັບຜູ້ຊ່ຽວຊານໄດໂນ

ຊື່ວິທະຍາສາດ: Janavis
ຕັ້ງຊື່ໂດຍ: Benito et al. 20223
ກຸ່ມ: ນົກຍຸກແລກ
ຄອບຄົວ / ເຄລດ: Ichthyornithes3
ການຈັດໝວດໝູ່: Theropoda > Avialae3
ອາຍຸຂອງຫີນ: 72 ຫາ 66 ລ້ານປີ (Maastrichtian)3
ຊັ້ນຫີນ: Maastricht3
ປະເທດ: ແບນຊິກ3
ບັນທຶກຟອສຊິລ: 1 ໃນ The Paleobiology Database3
ການຄົ້ນພົບ: The fossil was collected in 2000 by amateur palaeontologist Rudi Dortangs in Belgium. It was first reported in 2002, and in 2022 scientists named it Janavis finalidens after CT scans revealed its true identity.1
ຍັງຖົກຖຽງກັນຢູ່: Scientists debate whether Janavis could fly as well as modern birds, because its wing bones were very air-filled but its shoulder blade lacked a normal hook.1

ຂໍ້ມູນມາຈາກໃສ

Janavis (en.wikipedia.org)
Bird beak evolved before dinosaur extinction | University of Cambridge (cam.ac.uk)
Janavis 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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