波多野结衣办公室双飞_制服 丝袜 综合 日韩 欧美_网站永久看片免费_欧美一级片在线免费观看_免费视频91蜜桃_精产国品一区二区三区_97超碰免费在线观看_欧美做受喷浆在线观看_国产熟妇搡bbbb搡bbbb_麻豆精品国产传媒

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

New study pushes back origin of complex animal behavior by almost 10m years

Xinhua | Updated: 2025-10-30 13:12
Share
Share - WeChat

BEIJING -- A group of fossilized tunnels dug by animals about 550 million years ago, discovered in the upper reaches of the Yangtze River in China, have offered new insights into how the earliest animal activities began to shape the seafloor environment.

Previous research has shown that during a pivotal evolutionary period around 539 million years ago, known as the Ediacaran-Cambrian transition, animals began to shift from simply moving across the seabed to actively exploring deeper layers of sediment. The transition from 2D movement to 3D burrowing turned the ocean bottom from a single, uniform environment into a complex, animal-engineered habitat, fundamentally changing marine ecosystems.

Now, a discovery from Central China's Hubei province indicates that this revolutionary change had started much earlier.

Researchers from the Nanjing Institute of Geology and Palaeontology of the Chinese Academy of Sciences conducted a study on the Shibantan Biota, a treasure trove of ancient fossils in Hubei. This fossil biota dates back approximately 550 to 543 million years. They identified several types of burrows made by worm-like animals, indicating that complex animal behaviors were already shaping the seafloor environment nearly 10 million years earlier than previously thought.

These findings were on Thursday published in the journal Science Advances. Researchers involved in the study noted their discovery of Treptichnus streptosus, a new type of fossilized, zig-zag burrow made by an ancient worm.

"Its structure suggests that trace-making creatures were capable of rhythmic and repeatable movement and exploring, which reflects a well-developed nervous system and muscular control," lead researcher Chen Zhe told Xinhua.

Chen also mentioned other known traces found at the site, such as tadpole-shaped burrows and complex, compound tunnels created by ancient animals as they walked, searched for food and temporarily dwelled.

These adaptations indicate that animal behaviors were already diverse and complex at that time -- earlier than the rapid burst of life known as the Cambrian explosion, Chen explained, while adding that the new study extends the timeline of animal evolutionary sophistication further back than before.

Complex digging behaviors inferred from trace fossils, notably, also caused a lot of disturbance in the sediment.

They not only broke up the microbial mats covering the seafloor but also damaged the habitat of Ediacara organisms that lived there, which may have led to their decline, said co-author Liu Yarong, a PhD student at the institute.

This means that early animal burrowing may have contributed to the first known mass extinction event -- the decline of the Ediacara biota around 550 million years ago.

However, this disturbance also created new opportunities for other types of animals to evolve and diversify. Along with additional biological and environmental factors, early animal burrowing helped drive the major ecosystem transformation that took place at the dawn of the Cambrian period, according to the researchers.

In 2018, paleontologists from China and the United States reported the discovery of trace fossils that represented some of the earliest known evidence for animal appendages or legs in the Shibantan Biota in the Yangtze Gorges area.

The new study confirms that this biota, with its rich variety of trace and body fossils -- offers a unique window into one of the most important turning points in the history of life, namely the transition from simple life forms to complex ecosystems.

"Animals are not only shaped by their environment, but they also play a vital role in shaping it," Liu said.

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
 
波多野结衣办公室双飞_制服 丝袜 综合 日韩 欧美_网站永久看片免费_欧美一级片在线免费观看_免费视频91蜜桃_精产国品一区二区三区_97超碰免费在线观看_欧美做受喷浆在线观看_国产熟妇搡bbbb搡bbbb_麻豆精品国产传媒
欧美日韩久久不卡| 怡红院av一区二区三区| 人人狠狠综合久久亚洲| 国产51自产区| 欧美日韩久久不卡| 亚洲国产精品一区二区尤物区| 99精品欧美一区| 一本一道综合狠狠老| 最新成人av在线| 成人app网站| 91激情五月电影| 亚洲激情av在线| 韩国三级与黑人| 欧美男男青年gay1069videost | 欧美一区二区三区在线| 午夜电影一区二区三区| aaaa黄色片| 欧美电影免费观看高清完整版在线观看 | 欧美中文字幕一区二区三区| 亚洲男人的天堂在线aⅴ视频| 亚洲丝袜在线观看| 欧美精品色综合| 日韩av一区二区在线影视| 日本黄色网址大全| 久久久久国产成人精品亚洲午夜| 国产乱妇无码大片在线观看| 国产极品美女在线| 亚洲欧美成aⅴ人在线观看| 不许穿内裤随时挨c调教h苏绵| 欧美久久久影院| 日韩一区欧美二区| 日本一卡二卡在线播放| 国产精品全国免费观看高清| 99re热视频精品| 欧美人妖巨大在线| 老司机精品视频在线| 在线看片中文字幕| 综合在线观看色| 国产日韩视频一区| 精品国产免费人成电影在线观看四季| 国产又黄又大久久| 在线观看三级视频欧美| 中日韩一级黄色片| 9.1片黄在线观看| 中文字幕乱码日本亚洲一区二区 | 欧美日本在线播放| 日本强好片久久久久久aaa| 日本sm残虐另类| 性少妇xx生活| 亚洲美女在线一区| 亚欧洲乱码视频| 国产精品久久久久aaaa| 亚洲麻豆一区二区三区| 国产亚洲欧洲997久久综合| caoporen国产精品视频| 欧美一级二级三级蜜桃| 丁香亚洲综合激情啪啪综合| 欧美精品一级二级| 国产精品一区专区| 欧美日韩精品高清| 国产精品自拍网站| 欧美巨大另类极品videosbest | 超碰人人干人人| 亚洲人123区| 无码一区二区三区在线| 亚洲乱码国产乱码精品精小说| 成人乱码一区二区三区av| 成人免费在线观看入口| 日韩精品卡通动漫网站| 亚洲日本在线视频观看| 天天躁日日躁aaaa视频| 一区二区三区高清在线| 女人裸体性做爰全过| 亚洲午夜免费福利视频| 亚洲一区电影在线观看| 日韩avvvv在线播放| 天天干中文字幕| 精品一区二区三区欧美| 欧美日韩成人综合在线一区二区| 国产精品一区二区不卡| 欧美一区二区国产| 91偷拍与自偷拍精品| 精品盗摄一区二区三区| 久久久无码人妻精品无码| 国产精品久久福利| 人人妻人人澡人人爽| 舔着乳尖日韩一区| 在线视频一区二区免费| 国产乱码精品一品二品| 精品少妇一区二区三区免费观看| 97se亚洲国产综合自在线不卡| 久久精品亚洲国产奇米99| 亚洲久久久久久| 一区二区三区四区高清精品免费观看 | 26uuu精品一区二区三区四区在线 26uuu精品一区二区在线观看 | 30一40一50老女人毛片| 亚洲国产一区二区在线播放| 538精品在线观看| 国产成人在线视频免费播放| 精品国产成人系列| 搡老熟女老女人一区二区| 亚洲午夜日本在线观看| 91电影在线观看| 成人av网站大全| 国产精品美女一区二区三区| 一级黄色毛毛片| 另类中文字幕网| 日韩欧美激情在线| 青青草成人免费视频| 亚洲成人你懂的| 欧美日韩精品综合在线| japan高清日本乱xxxxx| 亚洲免费观看高清完整版在线观看熊| 中文字幕无码日韩专区免费| 国产精品一区一区三区| 久久香蕉国产线看观看99| 魔女鞋交玉足榨精调教| 日韩av网站免费在线| 5858s免费视频成人| 亚洲色偷偷色噜噜狠狠99网| 亚洲国产视频网站| 欧美丰满美乳xxx高潮www| 黑森林av导航| 婷婷六月综合亚洲| 91精品福利在线一区二区三区 | 久久精品女同亚洲女同13| 亚洲成av人片一区二区三区| 欧美乱妇20p| 波多野结衣先锋影音| 日韩成人免费电影| 欧美mv日韩mv国产| 少妇精品无码一区二区免费视频| 精品一区二区三区av| 久久综合九色综合久久久精品综合 | 91丨porny丨在线| 亚洲一区在线免费观看| 欧美乱妇15p| 久久无码人妻精品一区二区三区| 男人的天堂久久精品| 久久先锋影音av鲁色资源网| www.涩涩爱| 不卡一区二区在线| 亚洲一区二三区| 欧美伦理电影网| 久久国产精品无码一级毛片 | 亚洲ⅴ国产v天堂a无码二区| 国产精品一二三区在线| 国产精品第一页第二页第三页| 色欧美乱欧美15图片| aaa黄色大片| 蜜臀av一级做a爰片久久| 久久久久久**毛片大全| 一级黄色录像视频| 老熟女高潮一区二区三区| 美女在线视频一区| 亚洲国产精品激情在线观看| 色哟哟日韩精品| 亚洲一区二区三区四区av| 久久99精品一区二区三区三区| 中文字幕欧美日韩一区| 欧美亚一区二区| 麻豆av免费观看| 成人午夜av电影| 香蕉av福利精品导航| 久久亚洲精华国产精华液| 色狠狠桃花综合| 噜噜噜在线视频| 国产成人午夜片在线观看高清观看| 亚洲美女在线一区| 精品免费一区二区三区| 欧美做爰爽爽爽爽爽爽| 人妻体内射精一区二区三区| 国产一区二区三区电影在线观看 | 亚洲欧美日韩国产成人精品影院| 欧美美女黄视频| 亚洲女人毛茸茸高潮| 国产裸体视频网站| 韩国在线一区二区| 一区二区三区久久| 久久午夜羞羞影院免费观看| 欧美在线999| 婷婷综合在线视频| 国产chinesehd精品露脸| 国精产品一区一区三区mba视频| 亚洲精品视频免费观看| 2024国产精品| 欧美日韩在线播放三区| 亚洲欧美综合7777色婷婷| 黑森林av导航| 成人高清在线视频| 蜜桃精品视频在线| 依依成人精品视频| 日本一区二区三区电影| 91精品国产入口| 一本色道**综合亚洲精品蜜桃冫| 国产熟妇搡bbbb搡bbbb| 中国老熟女重囗味hdxx| 懂色av一区二区在线播放| 美腿丝袜亚洲色图| 亚洲国产精品天堂|