Plate P1. Illustrations of taxa, sample, and slide number. Scale bar = ~20 µm unless stated otherwise. Scanning electron microscope (SEM) photographs have varying scale bars. 1. Adnatosphaeridium multispinosum (Sample 189-1172D-15R-3, 40-42cm) (1). 2. Aio

Plate P1 (continued). 133-135. Spiniferites sp. A (Sample 189-1172D-24R-5, 130-133 cm) (2). 136. Spiniferites sp. B (Sample 189-1172A-47X-4, 85-87 cm) (1). 137, 138. Stoveracysta kakanuiensis (1); (137) Sample 189-1172A-39X-3, 122-124 cm; (138) Sample 189-1172A-39X-3, 145-147 cm. 139-141. Trithyrodinium evittii (Sample 189-1172D-24R-5, 12-14 cm) (1). 142. Turbiosphaera filosa (Sample 189-1172A-39X-4, 10-12 cm) a (1). 143. Vozzhennikovia apertura (Sample 189-1172A-39X-4, 85-87 cm) (1). 144. Alisocysta circumtabulata (Sample 189-1172D-23R-1, 41-43 cm) (SEM).