Xiaotingia
Xiaotingia was a small, feathered dinosaur that lived about 160 million years ago. It looked a lot like Archaeopteryx, the famous 'first bird', and scientists are still arguing about whether it was a bird or a raptor.23
ມັນມີຊີວິດຢູ່ເມື່ອໃດ?
ມັນໃຫຍ່ປານໃດ?
ມັນຍາວປານໃດ?
ມັນສູງປານໃດ?
ຄ່າປະມານ
ມັນໜັກປານໃດ?
Xiaotingia ໃຫຍ່ປານໃດ ເມື່ອທຽບກັບເຈົ້າ?
ແຄ່ຄິດໄລ່ໃນບຣາວເຊີຂອງເຈົ້າ. ບໍ່ມີຫຍັງຖືກບັນທຶກ ຫຼື ສົ່ງໄປໃສ.
ມັນໄວປານໃດ?
ເລື່ອງໜ້າຮູ້ມ່ວນໆ
Xiaotingia had long, strong arms and hands, which scientists used to think were special bird features, but they are actually found in a bigger group called Paraves.2
When Xiaotingia was added to the family tree, it made Archaeopteryx move from being a bird to being a raptor, which surprised many scientists.2
Xiaotingia had a large hole in its lower jaw, called a surangular foramen, that was more than 6% of the total jaw length.1
Its fourth finger bone (metacarpal IV) was thicker than the second and third, which is unusual.1
Xiaotingia shared some features with troodontids, like closely packed teeth in the front of the jaw and long, slender tail bones.1
The only known fossil was bought from a fossil dealer, so scientists are not 100% sure exactly which rock layer it came from.1

ໄຂຄວາມເຊື່ອຜິດ
ຄວາມເຊື່ອຜິດ: Xiaotingia is a bird because it looks like Archaeopteryx.
ຄວາມຈິງ: Scientists disagree. Some think Xiaotingia is a raptor (a deinonychosaur), not a bird, because it shares many features with raptors.2
ສຳລັບຜູ້ຊ່ຽວຊານໄດໂນ
- ຊື່ວິທະຍາສາດ
- Xiaotingia
- ຕັ້ງຊື່ໂດຍ
- Xu et al. 20115
- ກຸ່ມ
- ແຣບເຕີ
- ຄອບຄົວ / ເຄລດ
- Troodontidae5
- ການຈັດໝວດໝູ່
- Theropoda > Troodontidae5
- ອາຍຸຂອງຫີນ
- 168 ຫາ 152 ລ້ານປີ (Bathonian / Kimmeridgian)5
- ຊັ້ນຫີນ
- Tiaojishan5
- ປະເທດ
- ຈີນ5
- ບັນທຶກຟອສຊິລ
- 1 ໃນ The Paleobiology Database5
- ການຄົ້ນພົບ
- Xiaotingia was named in 2011 by Xu Xing and colleagues. The only skeleton was bought by the Shandong Tianyu Museum of Nature from a fossil dealer who said it came from Liaoning, China.1
- ຍັງຖົກຖຽງກັນຢູ່
- Scientists still debate whether Xiaotingia was a bird or a raptor, and even the exact age of the fossil is uncertain because the dealer could not say which quarry it came from.21
ຂໍ້ມູນມາຈາກໃສ
- ivpp.cas.cn (ivpp.cas.cn)
- An Archaeopteryx-like theropod from China and the origin of Avialae | Nature (nature.com)
- PBDB Taxon (paleobiodb.org)
- Xiaotingia (en.wikipedia.org)
- Xiaotingia 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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