Plate 4. Interference contrast microscope photographs of selected dinocysts (×29). AGC curation and England Finder references in parentheses. HI, MID, and LO are focal planes. 1. Operculodinium janduchenei: Sample 898A-1H-6B, 3-5 cm; HI (941171, V46/2). 2. Pyxidiella? simplex: Sample 900-18R-2, 58-60 cm; HI (940913, Y30/1). 3-5. Sample 898A-1H-6B, 3-5 cm. 3. Selenopemphix cf. S. nephroides; HI (940976, Yll/0). 4. Impagidinium bacatum; MID (941114, C22/2). 5. Habibacysta tectata; MID (940968, E18/3). 6. Brigantedinium simplex: Sample 898A-5H-5, 87-89 cm; HI (941157, P32/0) 7. Selenopemphix sp.: Sample 898A-1H-6B, 3-5 cm; MID (941152, R40/0). 8. ?Multispinula sp.: Sample 898A-13H-1, 85-87; MID (941119A.V42/0). 9. Filisphaera filifera: Sample 898A-1H-6A, 3-5 cm; MID (941115, N25/0). 10, 11. Sample 898A-17X-1 A, 92-93 cm. 10. Bitectatodinium tepikiense; HI (941111, X30/2). 11. Impagidinium aliferum; MID (941116, V42/2). 12. Impagidinium aculeatum: Sample 898A-18X-4A, 63-66 cm; HI (941174, X24/2). 13. Impagidinium japonicum Matsuoka, 1983: Sample 898A-16X-1, 29-31; MID (941123, Q28/2). 14. Tectatodinium sp. II of de Vernal and Mudie, 1989: Sample 898A-17x-1A, 92-93; MID (941113, W34/3). 15. Nematosphaeropsis labyrinthus: Sample 900A-18R-2, 58-60 cm; HI (941118). 16. Pyxidiella sp. of Edwards, 1984: Sample 900-18R-2, 13-15 cm; MID (940904,823/2). 17. Lejeunecysta communis: Sample 898A-13X-4, 140-143 cm; MID (941220, X19/0). 18. Impagidinium sp. F of Wrenn and Kokinos, 1986: Sample 898A-17X-2, 141-143 cm; MID (941218, V42/0). 19. Stelladinium stellatum: Sample 898A-5H-5, 87-89 cm; HI (941301, D25/3). 20. Corrudinium harlandii: Sample 900A-16R-5, 81-83 cm; HI (941202, M16/3). 21, 22. Sample 900A-18R-2, 58-60 cm. 21. Impagidinium patulum; HI (941102,N43/3). 22. Impagidinium sp. A of Mudie, 1987: a = HI (941142, M46/1); b = MID (941143, M46/1). 23, 24. Nematosphaeropsis oblonga: Sample 900A-18R-2A, 58-60 cm. 23. HI (941103, 012/3). 24. MID (941104, 012/3). 25. Impagidinium sphaericum: Sample 898A-1H-6B, 3-5 cm; (941180, H30/2). 26. Spiniferites splendidus: Sample 898A-1H-6B, 3-5 cm; MID (941108). 27. Spiniferites mirabilis/hyperacanthus of Benzakour, 1992: Sam-pie 900A-18R-2, 58-60; MID (940987, X20/3). 28. Melitasphaeridium choanophorum: Sample 898A-1H-6B, 3-5 cm; MID (941122, S41/0). 29. Labyrinthodinium truncatum: Sample 900-18R-2, 13-15 cm; MID (941123).