Plate P1. Silicoflagellates from Hole 1219A. All figures are from Sample 199-1219A-123H-5, 70–71 cm. Scale bar = 10 µm. 1. Corbisema flexuosa. 2. Dictyocha crux hannai. 3. Dictyocha hexacantha. 4. Naviculopsis trispinosa (tilted specimen showing apical bridge and spine). 5. Naviculopsis trispinosa (tilted specimen showing portal). 6. Corbisema inermis inermis. 7. Naviculopsis trigeminus n. sp. (abapical view).

Plate P1. Silicoflagellates from Hole 1219A. All figures are from Sample 199-1219A-123H-5, 70–71 cm. Scale bar = 10 µm. 1. Corbisema flexuosa. 2. Dictyocha crux hannai. 3. Dictyocha hexacantha. 4. Naviculopsis trispinosa (tilted specimen showing apical bridge and spine). 5. Naviculopsis trispinosa (tilted specimen showing portal). 6. Corbisema inermis inermis. 7. Naviculopsis trigeminus n. sp. (abapical view).