Plate P12. Scale bar = 10 µm. 1-3. Pontosphaera anisostrema (Sample 189-1168A-47X-2, 120 cm); (1) phase-contrast light (Ph); (2) differential-interference contrast light (DIC); (3) polarized light (XP). 4-6. Pontosphaera multipora (Sample 189-1168A-47X-2, 120 cm); (4) >12 µm (Ph); (5) DIC; (6) XP. 7. Pontosphaera desueta (Sample 189-1168A-39X-4, 15 cm) (XP). 8. Coccolithus pelagicus (Sample 189-1171C-26X-1, 15 cm) (Ph). 9. Coccolithus miopelagicus (Sample 189-1171C-25X-6, 15 cm) (Ph). 10-12. Minylitha convallis (Sample 189-1168A-15X-2, 15 cm); (10) Ph; (11) DIC; (12) XP.

Plate P12. Scale bar = 10 µm. 1-3. Pontosphaera anisostrema (Sample 189-1168A-47X-2, 120 cm); (1) phase-contrast light (Ph); (2) differential-interference contrast light (DIC); (3) polarized light (XP). 4-6. Pontosphaera multipora (Sample 189-1168A-47X-2, 120 cm); (4) >12 µm (Ph); (5) DIC; (6) XP. 7. Pontosphaera desueta (Sample 189-1168A-39X-4, 15 cm) (XP). 8. Coccolithus pelagicus >12 µm (Sample 189-1171C-26X-1, 15 cm) (Ph). 9. Coccolithus miopelagicus (Sample 189-1171C-25X-6, 15 cm) (Ph). 10-12. Minylitha convallis (Sample 189-1168A-15X-2, 15 cm); (10) Ph; (11) DIC; (12) XP.