Plate P8. Photomicrographs taken at 788x magnification. 1. Heterosphaeridium heterocanthum; 298.09 mbsf (Sample 188-1166A-32R-CC). 2, 3. Sample 188-1166A-33R-CC, 95 cm; 304.95 mbsf. (2) Isabelidinium variable (apical horn and archeopyle); (3) Isabelidinium variable (weakly developed antapical horns). 4. Wuroia corrugata; 314.95 mbsf (Sample 188-1166A-34R-CC, 55 cm). 5, 6. Sample 188-1166A-30R-1, 20 cm; 276.60 mbsf. (5) Osmundacidites sp. cf. Osmundacidites wellmanii; (6) Kraeuselisporites majus. 7. Dictyophyllidites sp.?; 258.72 mbsf (Sample 188-1166A-28R-CC). 8, 9. Ceratosporites sp. cf. equalis (proximal and equatorial views); 296.06 mbsf (Sample 188-1166A-32R-1, 26 cm).

Plate P8. Photomicrographs taken at 788x magnification. 1. Heterosphaeridium heterocanthum; 298.09 mbsf (Sample 188-1166A-32R-CC). 2, 3. Sample 188-1166A-33R-CC, 95 cm; 304.95 mbsf. (2) Isabelidinium variable (apical horn and archeopyle); (3) Isabelidinium variable (weakly developed antapical horns). 4. Wuroia corrugata; 314.95 mbsf (Sample 188-1166A-34R-CC, 55 cm). 5, 6. Sample 188-1166A-30R-1, 20 cm; 276.60 mbsf. (5) Osmundacidites sp. cf. Osmundacidites wellmanii; (6) Kraeuselisporites majus. 7. Dictyophyllidites sp.?; 258.72 mbsf (Sample 188-1166A-28R-CC). 8, 9. Ceratosporites sp. cf. equalis (proximal and equatorial views); 296.06 mbsf (Sample 188-1166A-32R-1, 26 cm).