Plate P1. Selected Neogene dinoflagellate cysts from Hole 1151A, Leg 186. All photographs are at the same magnification. Scale bar = 50 µm. Each figure contains a slide number and X-Y stage coordinates of a Carl Zeiss 45-35-02 stage for an Axioplan microscope. 1-4, 8. Sample 186-1151A-109R-3, 41-46 cm; (1) Diphyes latiusculum (B-1/83.0 x 20.8), (2) Diphyes latiusculum (B-1/86.0 x 7.8). (3) Cleistosphaeridium placacanthum (B-1/84.5 x 14.3), (4) Lingulodinium machaerophorum (B-1/83.1 x 25.0), (8) Evittosphaerula sp. (B-1/83.0 x 17.1). 5, 9. Sample 186-1151A-46R-3, 45-48 cm; (5) Filisphaera filifera (B-1/80.2 x 6.7), (9) Tuberculodinium vancampoae (B-1/93.4 x 16.7). 6, 13-15. Sample 186-1151A-73R-1, 45-48 cm; (6) Nematosphaeropsis lemniscata (B-1/81.9 x 4.9), (13) Xandarodinium sp. A (B-1/79.4 x 12.2), (14) Xandarodinium sp. A (B-1/84.2 x 7.2), (15) Brigantedinium simplex (B-1/86.2 x 5.1) 7. Reticulatosphaera actinocoronata (Sample 186-1151A-105R-1, 45-48 cm) (B-1/84.5 x 5.7). 10-12, 16. Sample 186-1151A-26R-1, 44-46 cm; (10) Lejeunecysta sp. (B-1/79.7 x 11.7), (11) Selenopemphix quanta (B-1/84.7 x 21.7), (12) Selenopemphix nephroides (B-1/82.0 x 12.5), (16) Brigantedinium irregulare (B-1/78.5 x 13.5).