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Ramathallus is a genus of sessile lobate alga that represents a probable stem-Rhodophyta from the Statherian, 1600 Million years ago. The holotype of Ramathallus lobatus shows a cell structure with finger-like protrusions and a coating of non-cellular apatic. The cells have a dark granular material inside of them. The organism grew by apical growth and possessed pseudoparenchymatous thallus which in turn infer a possible affinity with the Florideophyceae. Many lobate protrusions radiated from the organisms centre composed out of pseudoparenchymatous tissue interpreted as "Cell fountains" made up of variably-sized cells. Ramathallus shares a close morphological similarity with the Ediacaran genera made up of pseudoparenchymatous, lobate fossils ( Thallophyca, Thallophycoides, Paramecia and Gremiphyca) from the Doushantuo phosphorites of China .
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