Plate P5. Transmitted light microphotographs of radiolarians from Holes 1218A, 1219A, and 1220A. Scale bar = 100 µm. 1–3: Calocyclas bandyca; (1) Sample 199-1218A-25X-1, 120–122 cm (J46/4), (2) Sample 199-1220A-9H-7, 25–27 cm (X44/3), (3) Sample 199-1220A-9H-2, 125–127 cm (O46/1). 4. Calocyclas hispida (Sample 199-1218A-25X-5, 120–122 cm), K24/0. 5. Calocyclas turris (Sample 199-1218A-25X-5, 120–122 cm), F34/3. 6–8. Eucyrtidium ?hillaby; (6) Sample 199-1218A-25X-5, 120–122 cm (X49/4), (7) Sample 199-1218A-25X-5, 120–122 cm (H52/0), (8) Sample 199-1220A-9H-2, 25–27 cm (U40/0). 9. Eucyrtidium ?panthera (Sample 199-1220A-8H-4, 27–29 cm), K16/4. 10. Eucyrtidium montiparum (Sample 199-1218A-22X-5, 30–32 cm) F38/0. 11, 12. Eucyrtidium sp. F1 (Sample 199-1220A-9H-1, 25

Plate P5. Transmitted light microphotographs of radiolarians from Holes 1218A, 1219A, and 1220A. Scale bar = 100 µm. 1–3: Calocyclas bandyca; (1) Sample 199-1218A-25X-1, 120–122 cm (J46/4), (2) Sample 199-1220A-9H-7, 25–27 cm (X44/3), (3) Sample 199-1220A-9H-2, 125–127 cm (O46/1). 4. Calocyclas hispida (Sample 199-1218A-25X-5, 120–122 cm), K24/0. 5. Calocyclas turris (Sample 199-1218A-25X-5, 120–122 cm), F34/3. 6–8. Eucyrtidium ?hillaby; (6) Sample 199-1218A-25X-5, 120–122 cm (X49/4), (7) Sample 199-1218A-25X-5, 120–122 cm (H52/0), (8) Sample 199-1220A-9H-2, 25–27 cm (U40/0). 9. Eucyrtidium ?panthera (Sample 199-1220A-8H-4, 27–29 cm), K16/4. 10. Eucyrtidium montiparum (Sample 199-1218A-22X-5, 30–32 cm) F38/0. 11, 12. Eucyrtidium sp. F1 (Sample 199-1220A-9H-1, 25–27 cm); (11) E33/0, (12) G16/0.