280-m.y.-old fossil starch reveals early plant-animal mutualism Liu, Feng ; Bomfleur, Benjamin ; Peng, Huiping ; Li, Quan ; Kerp, Hans ; Zhu, Huaicheng Abstract Publication: Geology Pub Date: May 2018 DOI: 10.1130/G39929.1 Bibcode: 2018Geo....46..423L