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One of the oldest known,terrestrial vegetation Arthrostigma gracileDawson from the Lower Devonian of Chanyi in Yunnan was first recorded inHalle’s paper of 1927.The same investigator received in 1933 from V.K.Ting additional material,collected by Y.L.Wang from the same locality in
One of the oldest known, terrestrial vegetation Arthrostigma gracile Dawson from the Lower Devonian of Chanyi in Yunnan was first recorded in Hall’s paper of 1927. Same investigator received in 1933 from V. K. Ting additional material, collected by Y.L. Wang from the same locality in