Initial Reports Volume 190 Chapter 4, Table 12. Calcareous nannofossil range chart, Zones NN18-NN9. Notes: D = dominant, A = abundant, C = common, F = few, R = rare, P = poor, M = moderate, G = good. See "Biostratigraphy," p. 9, in the"Explanatory Notes" chapter. Epoch Zones Core, section,interval (cm) Depth (mbsf) Preservation Abundance Amaurolithus delicatus Amaurolithus primus Amaurolithus tricorniculatus Calcidiscus leptoporus Calcidiscus macintyrei Calcidiscus tropicus Catinaster calyculus Catinaster coalitus Ceratolithus cristatus Ceratolithus cristatus var. telesmus Coccolithus pelagicus Discoaster asymmetricus Discoaster bellus Discoaster bergenii Discoaster berggrenii Discoaster bollii Discoaster braarudii Discoaster brouweri Discoaster challengeri Discoaster exilis Discoaster hamatus Discoaster loeblichii Discoaster pentaradiatus Discoaster prepentaradiatus Discoaster quinqueramus Discoaster spp. Discoaster surculus Discoaster tamalis Discoaster triradiatus Discoaster variabilis Florisphaera profunda Gephyrocapsa spp. (<2 micrometers) Helicosphaera carteri Helicosphaera carteri var. walichii Helicosphaera intermedia Helicosphaera sellii Helicosphaera stalis Hughesius gizoensis Oolithus fragilis Pontosphaera japonica Pontosphaera multipora Pseudoemiliania lacunosa Pseudoemiliania ovata Reticulofenestra haqii Reticulofenestra minuta Reticulofenestra minutula Reticulofenestra pseudoumbilicus (>7 micrometers) Reticulofenestra pseudoumbilicus (5-7 micrometers) Reticulofenestra spp. Rhabdosphaera clavigera Scyphosphaera ventriosa Sphenolithus abies Sphenolithus grandis Sphenolithus moriformis Sphenolithus ssp. Syracosphaera pulchra Umbilicosphaera jafari Umbilicosphaera rotula C C A late Pliocene NN18 190-1173A- C A A C 29X-CC P F C C C C F A F A A 30X-CC, 33-34 282.97 P F C C C C A 31X-2, 75-76 285.49 P F A C F A A NN17 31X-4, 75-76 288.49 P R A A A A A NN16 31X-6, 75-76 291.49 P R A A C C C C A A F F C 32X-4, 78-79 298.22 P R A A A C C A A A C 32X-CC, 29-30 302.23 M C C R F R R C C F R A R R A A A A 33X-CC, 42-43 311.12 P F F F F F C C C F R C A F A A C C 34X-4, 70-71 317.14 M F A A A C C A A 34X-CC, 36-37 321.74 P F C C F F A C A A 35X-CC P R C C C A A F 36X-CC, 24-25 340.19 P R C C C C A A C A D 37X-CC, 32-33 350.52 M C C F R R R R R A C F C F A D R R R R 38X-CC, 45-46 360.24 M R C F F C F C C A D 39X-CC G C F C R F R R C R R R F F A A early Pliocene 40X-CC, 37-38 379.47 P F C F F F F 41X-4, 82-82 384.56 P F A A NN15-NN12 41X-CC, 57-58 389.15 B 42X-2, 75-76 391.09 P F F F F C F C F A 42X-4, 75-76 394.09 P F A A A 42X-CC B A D 43X-5, 75-76 405.19 P R A A A C C A C F late Miocene NN11b 43X-CC, 34-35 407.66 P R F C C F F F D C A A R C R F F 44X-4, 66-67 413.2 M F C C F C C C C C C D C F C C 44X-CC, 46-47 417.98 P C R C F F C F R C D A F C F 45X-CC, 40-41 427.5 P C R R F F C C C F C D F A 46X-CC, 46-47 437.15 M C F F R R R C F C C A D R A F 47X-4, 73-74 441.67 P C F F C F F C C C C C C D C 47X-CC P C F F F F C C F F F R F F NN11a 48X-2, 73-74 448.07 M C C C C A F C C C A 48X-CC B A A C C C 49X-CC, 40-41 464.9 P R A C A A C F D A C C C C F 50X-4, 75-76 469.89 P F A C C C A C 50X-CC, 47-48 474.55 M C F C R F F F F C F R late Miocene NN10b 51X-CC, 41-42 484.24 B 52X-CC, 44-45 493.96 P R A A A 53X-4, 70-71 498.94 P R D NN10a 53X-CC, 48-49 503.68 B 54X-4, 70-71 508.54 P R C C C C C A A A A C NN9 55X-CC, 44-45 522.88 P F F F F F C C F F F R C D C C F C C 56X-CC, 38-39 532.22 P C F C C C F C F C F C C F C C A A F