@article{oai:niigata-u.repo.nii.ac.jp:00006766, author = {Song, Yanyan and Zhang, Yuandong and Goldman, Daniel and Wang, Zhihao and Fang, Xiang and Ma, Xuan}, journal = {Science reports of Niigata University. (Geology), Science reports of Niigata University. (Geology)}, month = {Oct}, note = {The 2nd International Symposium on Earth History of Asia 31 October – 3 November, Niigata, Japan}, pages = {37--38}, title = {Preliminary report on the Graptolite Biostratigraphy from Latest Darriwilian to Early Sandbian (Ordovician) in Chengkou area, northern Chongqing, South China}, volume = {29(Supplement)}, year = {2014} }