Plate P10. 1-3. Thalassiosira aguste-lineata (A. Schmidt) Fryxell & Hasle, (1) Sample 172-1063D-3H-5, 143-144 cm, >25; (2) Sample 172-1063D-3H-5, 103-104 cm, >25; (3) Sample 172-1063D-3H-5, 133-134 cm, >25. Scale bars = 10 µm.