Initial Reports, Volume 199 Ms 199-108 Chapter 8, Table T2. Calcareous nannofossil datums, Site 1215. Note: B = bottom. Top Bottom Leg Site Hole Core Type Section Interval (cm) Leg Site Hole Core Type Section Interval (cm) Marker species Age (Ma) Depth (mbsf) Midpoint Depth (mbsf) Plus/Minus Depth (mcd) Midpoint Depth (mcd) Plus/Minus 199 1215 A 4 H 6 66 199 1215 A 4 H 7 44 B Discoaster lodoensis 52.4 29.00 0.64 32.90 0.64 199 1215 A 5 H 1 80 199 1215 A 5 H 2 80 B Sphenolithus radians 53.3 31.25 0.75 35.57 0.75 199 1215 A 5 H 5 10 199 1215 A 5 H 5 80 B Tribrachiatus orthostylus 53.4 36.15 0.35 40.37 0.35 199 1215 A 6 H 1 119 199 1215 A 6 H 2 122 B Tribrachiatus contortus 53.7 41.15 0.77 44.99 0.77 199 1215 A 6 H 5 85 199 1215 A 6 H 5 95 B Tribrachiatus bramlettei 53.9 46.10 0.05 49.94 0.05 199 1215 A 9 H 5 30 199 1215 A 9 H 5 70 B Discoaster multiradiatus 56.2 66.20 0.20 70.04 0.20 199 1215 B 4 H 1 80 199 1215 B 4 H 1 140 B Discoaster lodoensis 52.4 29.60 0.30 32.88 0.30 199 1215 B 4 H 3 110 199 1215 B 4 H 3 144 B Sphenolithus radians 53.3 32.77 0.17 36.05 0.17 199 1215 B 5 H 3 90 199 1215 B 5 H 3 110 B Tribrachiatus contortus 53.7 42.00 0.10 45.74 0.10 199 1215 B 5 H 6 50 199 1215 B 5 H 6 110 B Tribrachiatus bramlettei 53.9 46.30 0.30 50.04 0.30