Plate 1. 1, 2. Coronocyclus nitiscens, Sample 149-900A-54R-3, 35-36 cm (1, ph; 2, pol). 3. Neococcolithus dubius, Sample 149-900A-56R-4, 129-130 cm, ph. 4. Corannulm germaricus, Sample 149-900A-56R-5, 152-153 cm, ph. 5. Isthmolithus recurvus, Sample 149-900A-53R-3, 95-96 cm, ph. 6, 7. Lanternithus minutus, Sample 149-900A-53R-1, 141-142 cm (6, ph; 7, pol). 8. Calcidiscus protoannulus, Sample 149-900A-53R-1, 141-142 cm, pol. 9. Cribrocentrum reticulatum, Sample 149-900A-56R-5, 26-27 cm, pol. 10. Cyclicargolithus floridanus, Sample 149-900A-53R-1, 141-142 cm, ph. 11, 12. Braarudosphaera bigelowii, Sample 149-900A-53R-1, 141-142 cm (11, ph; 12, pol). 13. Pyrocyclus hermosus, Sample 149-900A-53R-2, 45-46 cm, pol. 14. Campylosphaera dela, Sample 149-900A-61R-2, 106-107 cm, pol. 15. Zygrhablithus bijugatus, Sample 149-900A-53R-1, 141-142 cm, pol. 16, 17. Clausicoccus fenestratus, Sample 149-900A-53R-1, 141-142 cm (16, ph; 17, pol). 18. Sphenolithus predistentus, Sample 149-900A-53R-1, 141-142 cm, pol. 19, 20. Sphenolithus furcatolithoides Sample 149-900A-62R-2, 2-3 cm, pol. 21, 22. Clausicoccus sp., Sample 149-900A-62R-2, 2-3 cm (21, ph; 22, pol). 23, 24. Sphenolithus obtusus, Sample 149-900A-58R-1, 12-13 cm, pol. 25. Sphenolithus pseudoradians, Sample 149-897C-55R-3, 75-76 cm, pol. 26, 27. Cruciplacolithus cruciformis, Sample 149-900A-53R-1, 141-142 cm (26, ph; 27, pol). 28. Sphenolithus editus, Sample 149-900A-59R-4, 25-26 cm. 29. Sphenolithus moriformis, Sample 149-900A-53R-1, 141-142 cm, pol. 30. Transversopontis sigmoidalis, Sample 149-900A-53R-3, 10-11 cm, pol. Light micrograph abbreviations: pol = polarized light, ph = phase contrast light. Magnification = ×2000.