Plicate Species of the Diatom Genus Thalassiosira(Bacillariophyta) from the Atlantic and Gulf Coasts of Southeastern United States, with the Descriptionof T. livingstoniorum sp. nov. Model Digital Document Prasad, A.K.S.K. Nienow, J. A., Hargraves, Paul E. Publisher Academy of Natural Sciences of Philadelphia. Member of HBOI Faculty Contributions