Ancient Seaweed (image) Virginia Tech Caption These images are part and counterpart of a macroscopic Lantian fossil, probably a seaweed, with differentiated morphologies including a distinct root-like holdfast to secure the organism on sea bottom, a conical stem, and a crown of ribbon-like structures. Scale bar is 1 centimeter. Credit Photo by Zhe Chen Usage Restrictions The photo of the ancient seaweed may be used with any report about the research published in Nature by Shuhai Xiao of Virginia Tech; Chuanming Zhou of the Chinese Academy of Sciences; and Hong Hua of Northwest University in Xi'an 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.