View PDF Identifiers Isolate 741 Taxonomy Class Bacillariophyceae Genus Thalassiosira Species weissflogii Synonyms (Name) Synonyms (Isolate) ACTIN, CCMP1336 Isolation Information Isolated By R. Guillard Isolation Date 1956 Collector R. Guillard Location Gardiner's Island, Long Island, NY Source Specimen Details Size 11.3 x 3.8 µm Medium Salinity Growth Details Active y Clonal Map