Initial Reports, Volume 199 Ms 199-111 Chapter 11, Table T3. Calcareous nannofossil datums, Site 1218. Note: B = bottom, T = top. ? = uncalibrated datum. 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 B 199 1218 A 4 H 7 50 199 1218 A 4 H CC Catinaster coalitus 10.8 36.78 0.08 41.20 0.08 T 199 1218 A 5 H 7 15 199 1218 A 5 H CC Sphenolithus heteromorphus 13.6 46.01 0.16 50.81 0.16 T 199 1218 A 5 H 7 15 199 1218 A 5 H CC Discoaster deflandrei acme 16.2 46.01 0.16 50.81 0.16 T 199 1218 A 6 H CC 199 1218 A 7 H 1 120 Triquetrorhabdulus carinatus ? 56.11 0.79 63.56 1.40 T 199 1218 A 9 H 2 80 199 1218 A 9 H 2 130 Triquetrorhabdulus carinatus acme ? 77.25 0.25 87.51 0.25 B 199 1218 A 9 H 4 80 199 1218 A 9 H 4 130 Sphenolithus disbelemnos 23.5 80.25 0.25 90.51 0.25 B 199 1218 A 9 H 5 130 199 1218 A 9 H 6 20 Discoaster druggii ? 82.20 0.20 92.46 0.16 T 199 1218 A 10 H 1 140 199 1218 A 10 H 2 10 Sphenolithus delphix 23.7 85.70 0.10 97.60 0.09 B 199 1218 A 10 H 2 70 199 1218 A 10 H 3 30 Sphenolithus delphix 24.4 86.95 0.55 98.85 0.54 T 199 1218 A 11 H 2 130 199 1218 A 11 H 3 130 Sphenolithus ciperoensis 24.7 97.25 0.75 110.65 0.71 T 199 1218 A 11 H 4 130 199 1218 A 11 H 5 38 Cyclicargolithus abisectus acme ? 99.79 0.29 113.19 0.25 T 199 1218 A 13 H 3 75 199 1218 A 13 H 4 45 Sphenolithus distentus 26.5 117.05 0.60 131.96 0.56 B 199 1218 A 14 H 5 80 199 1218 A 14 H 6 80 Sphenolithus ciperoensis 28.1 129.75 0.75 145.17 0.75 B 199 1218 A 18 H CC 199 1218 A 19 H 1 120 Sphenolithus distentus 30.4 170.22 0.68 190.69 0.59 T 199 1218 A 22 X 2 70 199 1218 A 22 X 2 147 Reticulofenestra umbilicus greater than or equal to 14 micrometer 31.7 198.49 0.39 220.79 0.38 T 199 1218 A 23 X 2 148 199 1218 A 23 X 3 35 Ericsonia formosa 32.9 208.67 0.19 231.91 0.16 T 199 1218 A 24 X 4 78 199 1218 A 24 X 4 90 Discoaster saipanensis 34.0 220.04 0.06 245.12 0.06 T 199 1218 A 24 X 5 56 199 1218 A 24 X 5 85 Discoaster barbadiensis 34.2 221.41 0.15 246.49 0.15 T 199 1218 A 25 X 7 70 199 1218 A 25 X CC Chiasmolithus grandis 37.1 234.11 0.21 260.38 0.07 B 199 1218 A 26 X 5 60 199 1218 A 26 X 6 125 Dictyococcites bisectus 38.5 241.98 1.08 268.05 0.32 T 199 1218 A 27 X CC 199 1218 A 28 X 1 50 Chiasmolithus solitus 40.4 252.06 1.95 277.09 0.85 T 199 1218 A 30 X 2 90 199 1218 A 30 X 3 2 Nannotetrina spp. 42.3 273.41 0.31 297.64 0.31 B 199 1218 B 5 H 2 56 199 1218 B 5 H 2 88 Discoaster kugleri 11.9 34.62 0.16 40.28 0.16 T 199 1218 B 5 H 7 45 199 1218 B 5 H CC Cyclicargolithus floridanus 13.2 42.04 0.19 47.70 0.19 T 199 1218 B 13 H 6 80 199 1218 B 13 H 6 148 Dictyococcites bisectus 117.04 0.34 132.53 0.34