Plate P1. Magnification for specimens is 2000x. Light micrography: PH = phase-contrast light, PL = plain transmitted light, XP = cross-polarized light. 1-4. Fasciculithus thomasii, Sample 173-1068A-8R-6, 19-20 cm, PH (1), PL (2), and XP (3, 4). 5, 10. Discoaster multiradiatus, Sample 173-1067A-13R-1, 64-65 cm, PH (5) and PL (10). 6-9. Fasciculithus involutus, Sample 173-1068A-10R-1, 126-127 cm, PH (6), PL (7), and XP (8, 9). 11-14. Ellipsolithus macellus, Sample 173-1068A-9R-6, 121-123 cm, PH (11), PL (12), and XP (13, 14). 15, 20, 25. Coccolithus robustus Sample 173-1068A-9R-6, 121-123 cm, PH (15), PL (20), and XP (25). 16-19. Fasciculithus aubertae, Sample 173-1068A-8R-6, 19-20 cm, PH (16), PL (17), and XP (18, 19). 21-24. Fasciculithus tympaniformis, Sample 173-1068A-10R-3, 123-125 cm, PH (21), PL (22), and XP (23, 24). Click on image for close-up.