Global EditionASIA 中文雙語Fran?ais
Culture
Home / Culture / Events and Festivals

Exhibition casts light on link between past and present

By WANG QIAN | CHINA DAILY | Updated: 2023-11-21 08:10
Share
Share - WeChat
A boy is intrigued by the fossils on display at the exhibition in Beijing. CHINA DAILY

This year marks the 100th anniversary since American geologist and paleontologist Amadeus William Grabau first discovered a type of fauna in Lingyuan in 1923, and named it the Jehol Series. In 1962, Chinese paleontologist Gu Zhiwei first proposed the name Jehol Biota. With increasing numbers of new fossil discoveries, in particular since the early 1990s, the Jehol Biota has caught the attention of domestic scholars. Traditionally, the biota is defined by three typical elements: the conchostracan (clam shrimp) Eosetheria, the insect Ephemeropsis, and the fish Lycoptera.

At the exhibition, the star fossil is the world's earliest placental mammal Juramaia sinensis, which has pushed back mammal evolution 35 million years. Before its discovery, scientists thought Eomaia, which was also discovered in Liaoning, was the mother of all placental mammals. Jura means the Jurassic period; maia is mother; and sinensis refers to its provenance in China.

"Although it is less than 20 centimeters long from head to tail, looking like a shrew (a small mammal related to mole and hedgehog), it can be called 'a great-grandmother' of all placental mammals, including us, human beings," Zhang says.

Besides mammal ancestors, there are also fossil birds, including the Ornithuromorpha, the clade within which all living birds are nested, and the Enantiornithes, an extinct lineage of stem bird. The exhibition includes almost all the biological categories in the transition from the Mesozoic to the Cenozoic.

"These well-preserved fossils unearthed in the Jehol Biota do not only indicate the process of biological evolution from primitive to relatively progressive, but also show the rich diversity of biological species, greatly enriching our understanding of the assemblage of biological groups and ecosystems in the middle Mesozoic age," Zhang says.

As the conclusion of the exhibition states, "there are still puzzles that remain unsolved, and we hope that the Jehol area will afford us more discoveries and scientific findings in the next 100 years, while promoting global academic exchange and cooperation, as well as fossil protection and utilization."

|<< Previous 1 2   
Most Popular
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: 成人午夜视频在线播放| 热re久久精品国产99热| 国产视频一二三| 中文字幕免费播放| 欧美丰满熟妇BBB久久久| 国产成人啪精品午夜在线播放 | 亚洲AV无码有乱码在线观看| 精品国产av一二三四区| 国产成人无码免费视频97| 一个人看的www视频免费在线观看| 欧美巨鞭大战丰满少妇| 免费大片av手机看片| 青娱乐在线播放| 国产精品亚洲精品日韩电影| peeasian人体| 成年大片免费视频| 五月综合色婷婷| 欧美激情综合色综合啪啪五月| 国产你懂的在线| 日日碰狠狠添天天爽爽爽| 女人扒开双腿让男人捅| 久久青青草原亚洲AV无码麻豆 | 美女被啪羞羞视频网站| 国产成人综合野草| 97久久精品无码一区二区天美| 日本无卡码一区二区三区| 亚洲国产三级在线观看| 热99精品在线| 午夜精品一区二区三区在线观看| 1000部精品久久久久久久久| 天天干天天干天天干天天干| 久久国产精品免费一区二区三区| 热久久精品免费视频| 动漫h肉yin文| 菠萝蜜视频在线观看免费视频| 国产精品美女久久久久| acg里番全彩侵犯本子福利| 岛国精品在线观看| 中文字幕日韩丝袜一区| 欧美三级不卡在线播放| 亚洲第一区二区快射影院|