Plate P13. 1, 2. Thalassiosira plicata Schrader, (1) Sample 172-1063D-4H-2, 113-114 cm, >25; (2) Sample 172-1063D-4H-2, 113-114 cm, >25. 3. Thalassiosira pacifica Gran and Angst, Sample 172-1063D-4H-4, 53-54 cm, st. 4. Thalassiosira sp., Sample 172-1063D-2H-2, 73-74 cm, >25. Scale bars = 10 µm. Click on image for close-up.