Table T13. Biostratigraphic events, Site 1170.

Group Hole Bioevent Age
(Ma)		 Interval (cm) Mean
depth
(mbsf)		 Error bar
(m)
Top
Bottom
N 1170A FO Emiliania huxleyi 0.26 Top of core 1H-CC 0.82 0.82
R 1170A LO Stylatractus universus 0.45 1H-CC 2H-CC 6.66 10.03
N 1170A LO Pseudoemiliania lacunosa 0.46 1H-CC 2H-CC 6.66 5.02
D 1170A LO Actinocyclus ingens 0.64 2H-CC 3H -CC 16.21 9.08
D 1170A LO Fragilariopsis barronii 1.44 4H-CC 5H -CC 34.24 10.33
N 1170A LO Calcidiscus macintyrei 1.67 4H-CC 5H-CC 34.24 5.17
D 1170A LO Proboscia baboi 1.80 4H-CC 5H-CC 34.24 10.33
P 1170A FO Globorotalia truncatulinoides 1.96 3H-CC 4H-CC 24.91 8.32
R 1170A LO Pseudocubus vema 2.40 5H-CC 6H-CC 44.22 9.63
D 1170A LO Thalassiosira complicata 2.50 7H-CC 8H-CC 63.61 10.72
D 1170A LO Thalassiosira inura 2.50 7H-CC 8H-CC 63.61 10.72
D 1170A LO Fragilariopsis weaveri 2.65 7H-CC 8H-CC 63.61 10.72
C 1170A LO Invertocysta tabulata 2.65 1H-CC 4H-CC 15.36 13.72
P 1170A FO Globorotalia inflata 3.20 7H-CC 8H-CC 63.16 9.25
N 1170A LO Reticulofenestra pseudoumbilica 3.75 6H-CC 7H-CC 53.64 4.61
D 1170A FO Thalassiosira complicata 4.44 11H-CC 12H-CC 101.67 9.57
R 1170A FO Pseudocubus vema 4.50 6H-CC 7H-CC 53.64 9.22
P 1170A LO Globorotalia pliozea 4.60 14H-CC 15H-CC 128.84 10.21
D 1170A FO Thalassiosira inura 4.92 11H-CC 12H-CC 101.67 9.57
R 1170A LO Lychnocanoma grande 5.00 9H-CC 10H-CC 82.67 9.62
N 1170A LO Ceratolithus acutus 5.05 12H-CC 13H-CC 110.85 4.40
P 1170A FO Globorotalia puncticulata 5.30 16H-CC 17H-CC 148.61 9.72
N 1170A FO Ceratolithus acutus 5.37 12H-CC 13H-CC 110.85 4.40
R 1170A LCO Stichocorys delmontensis 6.04 13H-CC 14H-CC 119.49 8.49
R 1170A LO Amphymenium challengerae 6.10 17H-CC 18H-CC 158.64 10.13
D 1170A LO Actinocyclus ingens var. ovalis 6.27 16H-CC 17H-CC 148.66 9.82
R 1170A FO Amphymenium challengerae 6.60 18H-CC 19H-CC 165.42 3.43
P 1170A FO Globorotalia conomiozea 6.90 18H-CC 19X-CC 165.42 3.43
P 1170A LO Paragloborotalia continuosa 8.00 18H-CC 19X-CC 165.42 3.43
P 1170A LO Paragloborotalia nympha 10.10 19X-CC 20X-CC 170.84 7.41
D 1170A LO Denticulopsis dimorpha 10.70 22X-CC 23X-CC 196.57 9.04
P 1170A LO Paragloborotalia mayeri 11.40 21X-CC 22X-CC 186.48 11.14
R 1170A FO Dictyophimus splendeus 11.80 19X-CC 20X-CC 170.84 7.41
N 1170A LO Cyclicargolithus floridanus 11.90 27X-CC 28X-CC 245.04 5.66
P 1170A FO Paragloborotalia mayeri 12.10 29X-CC 30X-CC 264.83 10.78
D 1170A FO Denticulopsis dimorpha 12.20 27X-CC 28X-CC 245.04 11.32
R 1170A LAO Cyrtocapsella tetrapera 12.50 27X-CC 28X-CC 245.04 11.32
D 1170A LO Actinocyclus ingens var. nodus 12.71 27X-CC 28X-CC 245.04 11.32
D 1170A FO Actinocyclus ingens var. nodus 14.38 32X-CC 33X-CC 295.25 8.71
D 1170A LO Cavitatus (Synedra) jouseanus 14.61 32X-CC 33X-CC 295.25 8.71
D 1170A LO Denticulopsis maccollumii 14.70 33X-CC 34X-CC 305.00 10.79
N 1170A LO Helicosphaera ampliaperta 15.60 29X-CC 30X-CC 264.83 5.39
R 1170A LO Lychnocanoma nipponica nipponica 15.70 32X-CC 33X-CC 295.25 8.71
P 1170A FO Praeorbulina curva 16.30 30X-CC 31X-CC 276.12 11.24
R 1170A LO Cenosphaera coronata 16.70 35X-CC 36X-CC 322.98 9.09
N 1170A FO Calcidiscus premacintyrei 17.40 34X-CC 35X-CC 314.41 4.02
P 1170A FO Globigerinoides trilobus 18.80 36X-CC 37X-CC 333.01 11.58
P 1170A FO Globoturborotalita connecta 20.90 37X-CC 38X-CC 342.99 8.38
D 1170A LO Azpeitia gombosii 21.10 41X-CC 42X-CC 381.85 10.64
P 1170A FO Globoturborotalita woodi 22.60 38X-CC 39X-CC 351.86 9.35
P 1170A FO Globoquadrina dehiscens 23.20 41X-CC 42X-CC 381.85 10.64
R 1170A FO Cyrtocapsella tetrapera 23.60 41X-CC 42X-CC 381.85 10.64
N 1170A LO Reticulofenestra bisecta 23.90 41X-CC 42X-CC 381.85 5.32
N 1170A LO Chiasmolithus altus 26.10 43X-CC 44X-CC 401.23 4.60
D 1170A LO Coscinodiscus lewisianus var. levis 28.20 42X-CC 43X-CC 391.90 9.46
P 1170A FO Chiloguembelina cubensis 28.50 42X-CC 43X-CC 391.90 9.46
D 1170A FO Coscinodiscus lewisianus var. levis 28.50 43X-CC 44X-CC 401.23 9.20
D 1170D FO Coscinodiscus lewisianus var. levis 28.50 1R - CC 2R - CC 432.39 5.12
D 1170A LO Rocella vigilans (small) 28.80 43X-CC 44X-CC 401.23 9.20
P 1170A LO Subbotina angiporoides 30.00 44X-CC 45X-CC 407.94 4.22
D 1170A FO Rocella vigilans (small) 30.24 48X-CC 49X-CC 442.76 14.99
D 1170D FO Cavitatus (Synedra) jouseanus 30.62 4R-1, 120 4R - CC 454.43 0.53
N 1170D FO Cyclicargolithus abisectus 31.20 4R-CC 5R-CC 459.60 4.61
N 1170D LO Reticulofenestra reticulata 35.00 6R-CC 8R-5, 50 479.54 6.82
C 1170D FCO Alterbidinium distinctum 37.00 8R-CC 9R-CC 493.01 9.03
C 1170D LO Cerebryocysta bartonensis 38.60 11R-CC 12R-CC 521.30 2.99
C 1170D LAO Enneadocysta partridgei 39.50 16R-CC 17R-CC 581.44 3.67
N 1170D LO Chiasmolithus solitus 40.40 12R-CC 13R-CC 529.71 5.12
N 1170D LAO Reticulofenestra reticulata 42.00 12R-CC 13R-CC 529.71 5.12
C 1170D FAO Enneadocysta partridgei 43.00 36R-CC 38R-CC 770.13 9.57
N 1170D FO Reticulofenestra umbilica 43.70 37R-CC 38R-CC 774.21 5.48

Notes: See individual microfossil sections in this chapter for top and bottom samples of event intervals. Mean depth is the midpoint between the top and bottom sample of the event interval. Group: N = nannofossil, R = radiolarian, D = diatom, P = planktonic foraminifer, C = dinocyst. FO = first occurrence, LO = last occurrence. LAO = last abundant occurrence, FAO = first abundant occurrence. This table is also available in ASCII format.