Plate 11. 1, 2, 4-11. Sphenolithus akropodus n. sp. (1, 4-6)^TR, holotype, Sample 149-900A-51R-6, 47 cm. (1) ×6000. (4, 5) XP, 0° and XP, 45°. (6) Ph. (2, 8, 9)^TR, Sample 149-900A-51R-6, 47 cm. (2) ×6000. (8, 9) XP, 45° and Ph. (7) Sample 149-897C-49R-3, 123 cm; XP, 45°. (10, 11) Sample 149-900A-51R-6, 47 cm; XP, 0° and XP, 45°. 3, 12-15. Sphenolithus predistentus Bramlette and Wilcoxon. (3, 12, 13)^TR, Sample 149-900A-51R-6, 47 cm. (3) ×6000. (12, 13) XP, 45° and Ph. (14) Sample 149-900A-50R-5, 16 cm; XP, 45°. (15) Sample 149-900A-50R-5, 16 cm; XP, 45°. 16-18. Sphenolithus aubryae n. sp., holotype, Sample 149-900A-29R-6, 23 cm; XP, 0° (16); XP, 45° (17); and Ph (18) 19. Sphenolithus capricornutus Bukry and Percival, Sample 149-898A-28R-1, 99 cm; XP, 0°. 20, 21. Sphenolithus delphix Bukry, Sample 149-898A-28R-1, 99 cm; XP, 0° (20) and XP, 45° (21). 22-24. Sphenolithus cometa n. sp., holotype, Sample 149-898A-24R-5, 24 cm; XP, 0° (22), XP, 45° (23), and Ph (24). 25-27. Sphenolithus belemnos Bramlette and Wilcoxon, Sample 149-900A-24R-5 44 cm (25) XP, 45°. (26, 27) XP, 0° and XP, 45°.