<address id="vrn9h"></address>

        <address id="vrn9h"></address>

          <address id="vrn9h"></address><sub id="vrn9h"></sub>

              中文 |

              Newsroom

              Scientists Discover 160-mln-yr-old Plant Fossil

              Jul 16, 2020

              Scientists have discovered a plant fossil dating back 160 million years to the dinosaur-dominated Jurassic Period. 

              The fossils containing two specimens were found in north China's Inner Mongolia Autonomous Region. The fossils show distinct branches, leaves, buds and seed-bearing structures and bear close resemblance to an extant species called catkin-yews Amentotaxus. 

              Researchers at the Nanjing Institute of Geology and Palaeontology under the Chinese Academy of Sciences (CAS) published news of the discovery in the English-language journal, National Science Review. Experts from the U.S. Oak Spring Garden Foundation, Chicago Botanic Garden and Yale University also participated in the study. 

              After further analysis, researchers termed the fossil catkin-yews Amentotaxus, a shrubby, coniferous green plant. This shows the plant survived on Earth for at least 160 million years. 

              Dong Chong, a CAS researcher and lead author of the study, said existing plants or animals that have remained relatively unchanged over millions of years are called "living fossils." Other organisms of their time have been extinct, and only the living fossils have survived retaining morphological features of their ancestors. 

              The term "living fossils" was first used by Charles Darwin in his celebrated work, "On the Origin of Species." 

              "Our study provides unequivocal evidence that the catkin-yews Amentotaxus has undergone little morphological change over at least 160 million years. The plant, therefore, can be recognized as a living fossil that provides an important new example of evolutionary stasis," Dong said. 

              According to the study, the history of the catkin-yews Amentotaxus can be traced back to the Middle-Late Jurassic period, during which dinosaurs took over the world. 

              "This plant has gone through periods of greenhouse and ice ages in the history of Earth, witnessing tremendous changes over millions of years," Dong added. 

              Despite its immense vitality, the number of catkin-yews Amentotaxus has decreased over the last few years. Dong said that more protection efforts are needed. (Xinhua) 

              Contact

              E-mail:

              Middle-Late Jurassic fossils from northeastern China reveal morphological stasis in the catkin-yew. Natational Science Review.

              Related Articles
              Contact Us
              • 86-10-68597521 (day)

                86-10-68597289 (night)

              • 86-10-68511095 (day)

                86-10-68512458 (night)

              • cas_en@cas.cn

              • 52 Sanlihe Rd., Beijing,

                China (100864)

              Copyright © 2002 - Chinese Academy of Sciences

              【马德里竞技赞助商-顶盛】一家专业性的体育平台,提供足球直播、篮球直播、体育赛事投注,,投入大量的人力...

              彩票联盟有几个平台

              天空足球平台

              北京k10赛车免费平台

              大象彩票注册网址

              印尼开奖

              大地棋牌登录中心

              有聊天室的平台

              315彩票注册彩金

              十三水app

              快3倍投计划表

              雅彩票app

              滚球网页