ບັດໄດໂນ ເລກທີ 0073 ຈາກ 2 027

Alexornis

ຊື່ໝາຍຄວາມວ່າ: “Alex's ancestral bird”1

ກິນ: ຊີ້ນນົກຍຸກແລກຄຣີເທເຊຍສຕອນປາຍ

Alexornis was a tiny bird that lived during the Late Cretaceous in what is now Mexico. It was about the size of a sparrow and probably ate insects or other small animals. This bird is special because it belongs to a group called enantiornithines, which had a backwards shoulder joint compared to modern birds.1 3

ມີຊີວິດຢູ່

86 ຫາ 84 ລ້ານປີກ່ອນ3

ຄຣີເທເຊຍສຕອນປາຍ

ພົບຟອສຊິລທີ່

Southwest of El Rosario, Baja California, Mexico (La Bocana Roja Formation)3 1

ນ້ຳໜັກ

0,0356 kg (0 lb)1

ຄວາມໄວສູງສຸດ

ປະມານ 22 ກມ/ຊມ (14 ໄມລ໌/ຊມ)

ບິນໄດ້, ຄ່າປະມານ

ມັນມີຊີວິດຢູ່ເມື່ອໃດ?

ໄທຣແອສຊິກ

ຈູຣາສຊິກ

ຄຣີເທເຊຍສ

252 ລ້ານປີກ່ອນ20114566, ດາວເຄາະນ້ອຍຕົກ

ມັນໃຫຍ່ປານໃດ?

ມັນໜັກປານໃດ?

ໜັກເທົ່າກ້ວຍ 0,5 ໜ່ວຍ

ເບົາກວ່າແມວບ້ານບິນຂ້າມສະໜາມບານເຕະທັງສະໜາມໄດ້ໃນ 17 ວິນາທີ

Alexornis ໃຫຍ່ປານໃດ ເມື່ອທຽບກັບເຈົ້າ?

ແຄ່ຄິດໄລ່ໃນບຣາວເຊີຂອງເຈົ້າ. ບໍ່ມີຫຍັງຖືກບັນທຶກ ຫຼື ສົ່ງໄປໃສ.

ມັນໄວປານໃດ?

ຄົນຍ່າງ ປະມານ 5 ກມ/ຊມ (3 mph)

ເດັກຂີ່ລົດຖີບ ປະມານ 12 ກມ/ຊມ (7 mph)

Alexornis ປະມານ 22 ກມ/ຊມ (14 mph)

ມ້າກຳລັງຄວບ ປະມານ 65 ກມ/ຊມ (40 mph)

ເສືອຊີຕາ ປະມານ 100 ກມ/ຊມ (62 mph)

ເລື່ອງເທ່ໆ

ເລື່ອງໜ້າຮູ້ມ່ວນໆ

Alexornis is known from only one partial skeleton, which includes shoulder, wing, and leg bones, but no skull.1

It weighed only about 35.6 grams, which is roughly the same as a modern sparrow.1

When first discovered, scientists thought Alexornis was an ancestor of kingfishers and woodpeckers, but later studies showed it was an enantiornithine bird.1

Enantiornithines like Alexornis had a reversed joint between the shoulder blade and the collarbone, which confused early researchers.1

The fossil was discovered in 1971 and formally described in 1976 by paleontologist Pierce Brodkorb.1

Alexornis lived during the Santonian age of the Late Cretaceous, about 85 to 83 million years ago.3

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

ເຈົ້າຖາມມາ

ຄຳຖາມທີ່ຖືກຖາມຫຼາຍທີ່ສຸດກ່ຽວກັບ Alexornis

?How big was Alexornis?

About the size of a sparrow, weighing roughly 35.6 grams.1

?What did Alexornis eat?

Scientists think it probably ate insects or other small animals, based on its small size and bird-like features.1

?Was Alexornis a dinosaur?

Alexornis was a bird, and birds are a type of dinosaur called avialan dinosaurs. So yes, it was a dinosaur.1

?When did Alexornis live?

It lived during the Late Cretaceous, about 85 to 83 million years ago.1

ໄຂຄວາມເຊື່ອຜິດ

ຄວາມເຊື່ອຜິດ: Some people thought Alexornis was a modern bird ancestor.

ຄວາມຈິງ: Actually, Alexornis is an enantiornithine, a group of ancient birds that went extinct with the dinosaurs.1

ສຳລັບຜູ້ຊ່ຽວຊານໄດໂນ

ຊື່ວິທະຍາສາດ: Alexornis
ຕັ້ງຊື່ໂດຍ: Brodkorb 19763
ກຸ່ມ: ນົກຍຸກແລກ
ຄອບຄົວ / ເຄລດ: Alexornithidae3
ການຈັດໝວດໝູ່: Theropoda > Avialae3
ອາຍຸຂອງຫີນ: 86 ຫາ 84 ລ້ານປີ (Santonian)3
ຊັ້ນຫີນ: La Bocana Roja3
ປະເທດ: ເມັກຊິໂກ3
ບັນທຶກຟອສຊິລ: 1 ໃນ The Paleobiology Database3
ການຄົ້ນພົບ: The only known fossil of Alexornis was found in 1971 near El Rosario, Baja California, Mexico. It was named and described in 1976 by Pierce Brodkorb, who thought it was an ancestor of modern kingfishers and woodpeckers.1 2
ຍັງຖົກຖຽງກັນຢູ່: Scientists are still unsure exactly how Alexornis is related to other enantiornithine birds, especially those from South America and Central Asia.1

ຂໍ້ມູນມາຈາກໃສ

Alexornis (en.wikipedia.org)
repository.si.edu (repository.si.edu)
Alexornis 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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