日韩大陆av,av激情亚洲男人的天堂国语,中文欧美亚洲欧日韩范冰冰,国产成人AV免观看

Global EditionASIA 中文雙語Fran?ais
China
Home / China / Innovation

New Archaeopteryx fossil sheds light on bird evolution

By Li Menghan | chinadaily.com.cn | Updated: 2025-05-15 21:36
Share
Share - WeChat
3D model of skull of the Chicago Archaeopteryx and the palatal evolution in paravians. [Photo provided to chinadaily.com.cn]

Significantly, the Chicago specimen is the first known Archaeopteryx fossil to preserve tertials — the flight feathers closest to the body. These feathers, not previously seen in non-avian feathered dinosaurs, may represent a flight-related innovation and an important evolutionary step toward powered flight.

The study, published in the journal Nature in May, was supported by the National Natural Science Foundation of China.

Feather distribution of the Chicago Archaeopteryx. [Photo provided to chinadaily.com.cn]
|<< Previous 1 2   
Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US