对两侧对称生物<i>Ikaria wariootia</i>的重建 (IMAGE) Proceedings of the National Academy of Sciences Caption 对两侧对称生物Ikaria wariootia的重建产生了遗迹化石Helminthoinichnites样的痕迹。 Credit 图片由 Sohail Wasif (University of California, Riverside, CA) 提供。 Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.