Plate P9. Diatoms from rise site: Stephanopyxis. 1. Stephanopyxis spp. (Sample 178-1095B-3H-3, 108-109 cm). 2, 4. Stephanopyxis spp. (Sample 178-1095B-9H-4, 105-106 cm). 3. Stephanopyxis superba (Sample 178-1095A-10H-7, 14.5-15.5 cm).