Figure 6.1-27. All specimens are latex casts and coated with ammonium chloride. Specimens are figured with dorsal or ventral surface facing the camera, and in left or right lateral view (ventral surface facing left or right), and in apical or cross sectional view. The scale for each is stated in the caption. 1-5. Hibolithes catlinensis (Hector), 1, 2, R.7506.4.1, ventral and right lateral views (anterior of specimen exfoliated), x 1. 3, UTGD87277a (Q10), left lateral view, x 1. 4, 5, UTGD87277b (Q10), ventral and left lateral views (eroded ventral groove (4), and lateral line depressions (5), visible.), x 1.8. 6-9, Hibolithes cf. H. marwicki, 6, R.7508.13.11, slab with several specimens, partially current aligned, and most viewed laterally, x 1. 7, R.7508.13.11a, view of ventral groove of rightmost specimen (in 6) x 2. 8, R.7508.13.9, ventral view illustrating ventral groove, x 2. 9, R.7508.13.11b, natural cross section on edge of slab (not visible in 6), x 2.5. 10-12, Dicoelites sp. A, 10, 11, R.7519.24.51, ventral and dorsal views, x 2.7. 12, R.7519.17.11, ventral view, x 1.7. 11-14, Hibolithes sp. A, 13, R.7519.60.30a, x 2.1, 14, R.7519.60.30b, x 4.3. Lateral (?left) views. 15, Hibolithes sp. B, R.7507.9.19. Ventral view, x 1. 16-17, Hibolithes sp. C, 16, R.7504.3.87. Left lateral (approximately) view of crushed specimen, x 1; ventral groove visible towards top at left, and eroded, diverging lateral lines towards right over mid and apical regions. 17, R.7504.3.15. Left lateral view of slightly crushed specimen, x 1. 18-19, Duvalia aff. rhopaliformis, UTGD87397 (Q13). 18, left lateral view, x 1.3. Ventral asymmetry at mid-guard is a casting artifact. 19, apical view, x 3. 20-21, Hibolithes aff. arkelli, 20, UTGD 87221d (Q2). Ventral view (x 1), with ventral groove weakly visible at top. 21, UTGD87221a (Q2). Ventral view of alveolar and ?anterior stem region x 1; slightly exfoliated anteriorly. 22-23, Rhopaloteuthis sp., R.7507.1.2. 22, apical view, x 3; 23, dorsal view x 1.2. 24-25, Duvalia sp., R.7507.9.13. 24, apical view, x 1.1. 25, lateral (?left) view, x 1.1. 26, Pachyduvalia aff. pinguis, R.7507.9.4a. Left lateral view, x 1.7. Eroded lateral line depression more prominent in original. 27, Pachyduvalia aff. agricolae, R.7507.9.8. Orientation uncertain, x 1.7.