AI帮你理解科学

AI 生成解读视频

AI抽取解析论文重点内容自动生成视频


pub
生成解读视频

AI 溯源

AI解析本论文相关学术脉络


Master Reading Tree
生成 溯源树

Fossil steroids record the appearance of Demospongiae during the Cryogenian period

NATURE, no. 7230 (2009): 718-U5

被引用556|浏览9
WOS NATURE
下载 PDF 全文
引用

摘要

The Neoproterozoic era ( 1,000 - 542 Myr ago) was an era of climatic extremes and biological evolutionary developments culminating in the emergence of animals ( Metazoa) and new ecosystems(1). Here we show that abundant sedimentary 24- isopropylcholestanes, the hydrocarbon remains of C-30 sterols produced by marine demosponges, record the...更多

代码

数据

您的评分 :
0

 

标签
评论
小科