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Keywords from Image Description:
Diatomaceae of Philadelphia Plate . follows PLATE Fig Surirella fastuosa Ehr Surirella biseriata Ehr Brb Surirella splendida Ehr Kuetz Surirella crumena Brb Surirella ovalis Brb Surirella tenera Greg Surirella recedens Surirella linearis Wm Sm Surirella oblonga Ehr Surirella cruciata Surirella gracilis Grun Surirella