日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

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

Dinosaur-era bird fossil found with unlaid egg

China Daily | Updated: 2019-03-28 07:18
Share
Share - WeChat
A fossilized bird dating back about 110 million years is discovered in Yumen, Northwest China's Gansu province. [Photo/Chinanews.com]

A group of scientists in Gansu province have discovered a fossilized bird dating back about 110 million years and the first ever to have an unlaid egg in its abdomen.

The fossil represents a new species, Avimaia schweitzerae, belonging to a group called the Enantiornithes, which was abundant around the world and coexisted with dinosaurs in the Cretaceous period.

The well preserved fossil was discovered in the city of Yumen.

Because the specimen was crushed flat, it was only after a small fragment was extracted and analyzed under a microscope that the research team at the Chinese Academy of Sciences' Institute of Vertebrate Paleontology and Paleoanthropology realized the unusual tissue was an egg, said Alida Bailleul, the lead author of the article.

1 2 3 Next   >>|
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
 
主站蜘蛛池模板: 国产vr一区二区在线观看 | 天天干干干| 成人av激情 | 99久久久无码国产精品 | 久久精品 | 啊哈不要啊| 欧美淫视频 | 国产精品一区视频 | 国产成人精品免费视频大全可播放的 | 久草精品在线 | 国产亚洲一区二区三区 | 久久国产影院 | 久久久综合 | 日韩视频在线观看 | 免费1级片 | www.一区 | 99国产精品2018视频全部 | 日韩中文在线观看 | 91在线一区二区三区 | 亚洲免费一区 | 激情插插插 | 亚洲经典在线中文字幕 | 草草免费 | 一区二区在线看 | 羞羞的动漫在线观看 | 夜夜摸夜夜爽 | 韩国精品免费视频 | 国产12孩岁A片被A午夜 | 久久亚洲欧美成人精品 | 99久久这里只有精品 | 无限资源动漫精彩日本 | 天天躁夜夜躁很很躁麻豆 | 九一国产在线观看 | 精品欧美一区二区三区精品久久 | 国产在线综合一区二区三区 | 色婷婷久久久亚洲一区二区三区 | 婷婷久久五月天 | 国产欧美日韩综合精品一区二区 | 日本综合欧美一区二区三区 | 久久精品欧美一区二区三区不卡 | 国产在线日本 |