Plate P2. Scale bar = 10 µm. 1A, 1B. Fasciculithus sp. (Sample 183-1135A-26R-2, 25-26 cm); (1A) crossed polarizers, (1B) differential interference contrast light (DIC). 2A, 2B. Ellipsolithus distichus (Sample 183-1135A-26R-2, 25-26 cm); (1A) crossed polarizers, (1B) DIC. 3A, 3B. Fasciculithus tympaniformis (Sample 183-1135A-26R-2, 25-26 cm); (3A) crossed polarizers, (3B) DIC. 4A-4C. Toweius pertusus (Sample 183-1135A-26R-2, 25-26 cm); (4A) DIC, (4B) transmitted light, (4C) crossed polarizers. 5A, 5B. Neococcolithes dubius (Sample 183-1138A-44R-4, 25-26 cm); (5A) crossed polarizers, (5B) transmitted light. 5C. Neococcolithes dubius (Sample 183-1135A-25R-1, 25-26 cm; scanning electron microscope).

Plate P2. Scale bar = 10 µm. 1A, 1B. Fasciculithus sp. (Sample 183-1135A-26R-2, 25-26 cm); (1A) crossed polarizers, (1B) differential interference contrast light (DIC). 2A, 2B. Ellipsolithus distichus (Sample 183-1135A-26R-2, 25-26 cm); (1A) crossed polarizers, (1B) DIC. 3A, 3B. Fasciculithus tympaniformis (Sample 183-1135A-26R-2, 25-26 cm); (3A) crossed polarizers, (3B) DIC. 4A-4C. Toweius pertusus (Sample 183-1135A-26R-2, 25-26 cm); (4A) DIC, (4B) transmitted light, (4C) crossed polarizers. 5A, 5B. Neococcolithes dubius (Sample 183-1138A-44R-4, 25-26 cm); (5A) crossed polarizers, (5B) transmitted light. 5C. Neococcolithes dubius (Sample 183-1135A-25R-1, 25-26 cm; scanning electron microscope).