Table 6.

Table T6. Ages of calcareous nannofossil and planktonic foraminifer datums used during Leg 180.

Datum events	Species	Age (Ma)
LAD	Globorotalia flexuosa	0.068
FAD	Emiliania huxleyi acme	0.085
LAD	Globoquadrina pseudofoliata	0.22
FAD	Bolliella calida	0.22
FAD	Emiliania huxleyi	0.26
FAD	Globorotalia flexuosa	0.401
FAD	Globorotalia hirsuta	0.45
LAD	Pseudoemiliania lacunosa	0.46
LAD	Globorotalia tosaensis	0.65
FAD	Globorotalia crassaformis hessi	0.75
LAD	Reticulofenestra asanoi	0.88
FAD	Gephyrocapsa omega	1.02
LAD	Helicosphaera sellii	1.25
LAD	Globigerinoides fistulosus	1.6
LAD	Calcidiscus macintyrei	1.67
FAD	Gephyrocapsa oceanica	1.75
LAD	Globigerinoides extremus	1.77
LAD	Discoaster brouweri	1.95
LAD	Discoaster pentaradiatus	2.52
LAD	Discoaster surculus	2.55
FAD	Globorotalia truncatulinoides	2.58
LAD	Globorotalia pertenuis	2.60
LAD	Discoaster tamalis	2.83
LAD	Dentoglobigerina altispira	3.09
LAD	Globorotalia multicamerata	3.09
LAD	Sphaeroidinellopsis seminulina	3.12
FAD	Sphaeroidinella dehiscens s.s	3.25
FAD	Globorotalia fistulosus	3.33
FAD	Globorotalia tosaensis	3.35
LAD	Globorotalia margaritae	3.58
LAD	Pulleniatina primalis	3.65
LAD	Reticulofenestra pseudoumbilicus	3.75
S. to D. coil	Pulleniatina	3.95
LAD	Amaurolithus tricorniculatus	4.0
FCO	Discoaster asymmetricus	4.13
LAD	Globoturborotalita nepenthes	4.20
LAD	Pulleniatina spectabilis	4.20
FAD	Globorotalia crassaformis	4.5
LAD	Globigerinoides seigliei	4.7
FAD	Sphaeroidinella dehiscens s.l.	5.20
LAD	Ceratolithus acutus	5.05
FAD	Ceratolithus rugosus	5.23
FAD	Ceratolithus acutus	5.37
LAD	Discoaster quinqueramus	5.54
FAD	Globorotalia tumida	5.60
LAD	Globoquadrina dehiscens	5.8
LAD	Globorotalia lenguaensis	6.0
FAD	Globorotalia margaritae	6.0
FAD	Pulleniatina primalis	6.4
S. to D. coil	Neogloboquadrina acostaensis	6.2
D. to S. coil	Neogloboquadrina acostaensis	6.6
FAD	Amaurolithus primus	7.2
FAD	Globorotalia cibaoensis	7.8
FAD	Globorotalia juanai	8.1
FAD	Candeina nitida	8.1
FAD	Globigerinoides extremus	8.3
FAD	Globorotalia plesiotumida	8.3
FAD	Neogloboquadrina humerosa	8.5
FAD	Discoaster quinqueramus	8.6
LAD	Discoaster hamatus	9.63
FAD	Discoaster hamatus	10.7
FAD	Neogloboquadrina acostaensis	10.9
FAD	Catinaster coalitus	10.9
LAD	Neogloboquadrina mayeri	11.4
LAD	Discoaster kugleri	11.5
FAD	Globoturborotalia nepenthes	11.8
FAD	Discoaster kugleri	11.8
LAD	Globorotalia fohsi robusta	11.9
LAD	Globorotalia fohsi lobata	12.1
FAD	Globorotalia fohsi robusta	12.3
FAD	Globorotalia fohsi lobata	12.5
FAD	Globorotalia fohsi s.s.	12.7
FAD	Globorotalia praefohsi	12.7
LAD	Sphenolithus heteromorphus	13.6
LAD	Globorotalia peripheronda	14.6
FAD	Globorotalia peripheroacuta	14.8
FAD	Orbulina suturalis	15.1
LAD	Helicosphaera ampliaperta	15.6
LAD	Sphenolithus belemnos	19.2

Notes: LAD = last occurrence datum; FAD = first occurrence datum; "S. to D. coil" refers to the change from sinistral to dextral coiling; FCO = first common occurrence. Nannofossil datum ages are taken from the ODP JANUS datum-database dictionary, Shackleton et al. (1995), and Sprovieri (1993). Foraminifer datum ages are from Berggren et al. (1995a) and Berggren et al. (1995b).