Initial Reports Volume 190 Chapter 5, 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 Zone Core, section, interval (cm) Depth (mbsf) Preservation Abundance Amaurolithus amplificus Amaurolithus delicatus Amaurolithus primus Amaurolithus tricorniculatus Angulolithina arca Calcidiscus leptoporus Calcidiscus macintyrei Calcidiscus premacintyrei Calcidiscus tropicus Catinaster calyculus Catinaster coalitus Catinaster spp. Ceratolithus cristatus Coccolithus miopelagicus Coccolithus pelagicus Coccolithus pelagicus (with bar) Coronocyclus nitescens Cryptococcolithus mediaperforatus Cyclicargolithus floridanus Discoaster asymmetricus Discoaster bellus Discoaster bergeni Discoaster bollii Discoaster braarudii Discoaster brouweri Discoaster calcaris Discoaster challengeri Discoaster deflandrei Discoaster exilis Discoaster hamatus Discoaster kugleri Discoaster musicus Discoaster neorectus Discoaster pansus Discoaster pentaradiatus Discoaster petaliformis Discoaster prepentaradiatus Discoaster quinqueramus Discoaster spp. Discoaster subsurculus Discoaster surculus Discoaster tamalis Discoaster triradiatus Discoaster variabilis Florisphaera profunda Gephyrocapsa spp. (<2 ?m) Hayella challengeri Helicosphaera carteri Helicosphaera carteri var. Walichii Helicosphaera granulata Helicosphaera intermedia Helicosphaera orientalis Helicosphaera sellii Helicosphaera spp. Helicosphaera stalis Helicosphaera vedderi Helicosphaera waltrans Hughesius gizoensis Orthorhabdus serratus Pontosphaera japonica Pontosphaera multipora Pseudoemiliania lacunosa Pseudoemiliania ovata Reticulofenestra haqii Reticulofenestra minuta Reticulofenestra minutula Reticulofenestra pseudoumbilicus (>7 ?m) Reticulofenestra pseudoumbilicus (5-7 ?m) Reticulofenestra spp. Rhabdosphaera clavigera Scapholithus fossilis Scyphosphaera globulata Scyphosphaera pulcherrima Scyphosphaera tubifera Scyphosphaera ventriosa Sphenolithus abies Sphenolithus grandis Sphenolithus heteromorphus Sphenolithus moriformis Sphenolithus spp. Triquetrorhabdulus milowii Triquetrorhabdulus rugosus Umbilicosphaera jafari Umbilicosphaera rotula Umbilicosphaera sibogae var. sibogae late Pliocene NN18 190-1174B- 54R-CC P R C C C C C F A A A C A F F 55R-CC P R C C C C A C C C F A 56R-2, 75-76 670.95 P F C C F C F F D C A C NN17 56R-CC P R C C C C C F D A C C NN16 57R-2, 75-76 680.55 P R C C F C A A C A 57R-4, 75-76 683.55 P R C F C C A C C A early Piocene 58R-CC P F C C C F C D C A A 58R-3, 75-76 691.75 P R F C C C F A A A C A 58R-CC P R C C F F C F C A F C D F 59R-CC P F C C C F F F F R F A A F R C F A A F F 60R-CC P R A C C C D 61R-CC P R F R R R R R F F A C C F A A 62R-CC P F F R R R A C C C A A R F NN15 63R-4, 74-75 741.34 B 63R-CC P R C C F C C C C A C A A A C C C 64R-2, 71-72 747.91 B 64R-4, 77-78 750.97 B 54R-CC B C A C A A 65R-5, 74-75 761.74 P R A D NN14 65R-CC P R F C C C C C C C C D C C C 66R-3, 72-73 739.82 P R C C C R A A NN13-12 66R-4, 71-72 769.81 P R C F C A D A 66R-CC B 67R-4, 75-76 778.19 P R late Miocene NN11b 67R-6, 75-76 781.19 P C C F F F F F R A D C F C F 67R-CC M C R R F R R R R F D F A C R R R F 68R-CC B 69R-CC P C F F F R R R C F C D C C F F 70R-CC P R A A A 71R-CC P C F R R F F F C R R R C F F C A A C F C C F 72R-CC P R C D 73R-CC M F C C C C C F A C C F C A C C C C C C C NN11a 74R-3, 41-42 844.81 P F C F C C F C D C C 74R-CC B 75R-CC P R C C C C A F C A A F A C 76R-CC P R C C C A F C A A A late Miocene NN10b 77R-CC B 78R-CC B NN10a 79R-CC P F D F F F C F F C C C A C NN9 80R-4, 75-76 904.25 M C C C C C C C C C C C C C A C 80R-CC B 81R-CC P C F F F C C C C C R R F F C A A C F F C C C NN8 82R-2, 74-75 920.54 P R C C C F D C C F C 82R-CC P R A D 83R-3, 85-86 931.75 P C C C F C A D C A F F 83R-CC B 84R-CC P R A C F F C A A 85R-4, 75-76 952.35 P R A C C A C F middle Miocene NN7 85R-CC P R A A A 86R-CC P R F C C F C F D C C C C C C 87R-3, 46-47 969.96 B 87R-CC B 88R-CC B 89R-CC P F C C C C A A C A A C C C C C 90R-2, 77-78 997.17 P R A A A D 90R-CC P R C C C F C C A A F F F F 91R-CC M F C C C C F F F F F C D A C F F F F F C 92R-CC P R A A A 93R-CC P R C F F C A C A C C C A A C C 94R-CC P C F C C C F F F F R F F C A A C A C C C F C C 95R-CC P C C C C C F F F F C F A A A A F R C C 96R-CC P R F F C F C F A A A A C C C NN6 97R-CC B 98R-CC P R F F C F C R C F D A F C F C F F 99R-CC M C F F R C F C C C R C R R F A A C A C C 100R-CC P F F C R A C C F F F A A A C F F 101R-CC P R A A A A A 102R-CC P R A A A