|
|
|
|
Zone/subzone base
|
|
|---|---|---|---|---|
|
Event
|
Age
(Ma) |
Age references
|
Martini (1971)
|
Okada and Bukry (1980)
|
| FCO acme Emiliania huxleyi | 0.085-0.073 | 1 | NN21b |
|
| FO Emiliania huxleyi | 0.26 | 1 | NN21a | CN15 |
| LO Pseudoemiliania lacunosa | 0.46 | 1 | NN20 | CN14b |
| LO Reticulofenestra asanoi | 0.88 | 2 |
|
|
| RE medium Gephyrocapsa spp. | 1.02 | 3 |
|
CN14a? |
| FO Reticulofenestra asanoi | 1.08 | 2 |
|
|
| LO large Gephyrocapsa spp. | 1.24 | 2 |
|
|
| FO large Gephyrocapsa spp. | 1.45 | 3 |
|
|
| LO Calcidiscus macintyrei | 1.59 | 3 |
|
|
| FO medium Gephyrocapsa | 1.67 | 3 |
|
|
| LO Discoaster brouweri | 1.96 | 4 | NN19 | CN13a |
| LO Discoaster pentaradiatus | 2.44 | 4 | NN18 | CN12d |
| LO Discoaster surculus | 2.61 | 4 | NN17 | CN12c |
| LO Discoaster tamalis | 2.76 | 4 |
|
CN12b |
| LO Sphenolithus spp. | 3.65 | 4 |
|
|
| LO Reticulofenestra pseudoumbilicus | 3.8 | 4 | NN16 | CN12a |
| FO Ceratolithus rugosus | 5.04 | 4 |
|
|
| FO Ceratolithus acutus | 5.34 | 4 |
|
|
| LO Triquetrorhabdulus rugosus | 5.35 | 4 |
|
|
| LO Discoaster quinqueramus | 5.56 | 4 | NN12 | CN10a |
| LO Amaurolithus amplificus | 5.88 | 4 |
|
|
| FO Amaurolithus amplificus | 6.5 | 4 |
|
|
| RE absence interval Reticulofenestra pseudoumbilicus | 6.8 | 4 |
|
|
| FO Amaurolithus primus | 7.24 | 4 |
|
CN9b |
| FO Discoaster berggrenii | 8.35 | 4 | NN11? | CN9a |
| FO Discoaster loeblichii | 8.43 | 4 |
|
|
| LCO absence interval Reticulofenestra pseudoumbilicus | 8.85 | 4 |
|
|
| FO Minylitha convalis | 9.37 | 4 |
|
|
| LO Discoaster hamatus | 9.4 | 4 | NN10 | CN8a |
| FO Discoaster neohamatus | 9.56 | 4 | NN9 | CN7 |
| FO Discoaster hamatus | 10.38 | 4 |
|
|
| LO Coccolithus miopelagicus | 10.48 | 4 |
|
|
| FO Catinaster coalitus | 10.73 | 4 | NN8 | CN6 |
| LCO Discoaster kugleri | 11.36 | 4 |
|
|
| FCO Discoaster kugleri | 11.74 | 4 |
|
|
| FO Calcidiscus macintyrei | 12.14 | 4 |
|
|
| FO Discoaster kugleri | 12.2 | 4 | NN7 | CN5b |
| LO Coronocyclus nitescens | 12.43 | 4 |
|
|
| FO Triquetrorhabdulus rugosus | 12.62 | 4 |
|
|
| LO Calcidiscus premacintyrei | 12.65 | 4 |
|
|
| FO Discoaster signus | 13.08 | 4 |
|
|
| LO Cyclicargolithus floridanus | 13.19 | 4 |
|
|
| LO Sphenolithus heteromorphus | 13.57 | 4 | NN6 | CN5a |
| LO Helicosphaera ampliaperta | 15.87 | 4 | NN5 | CN4 |
| FO Discoaster signus | 16.2 | 4 |
|
|
| LCO acme Discoaster deflandrei | 16.22 | 4 |
|
|
| FO Calcidiscus premacintyrei | 17.4 | 5 |
|
|
| FO Sphenolithus heteromorphus | 18.2 | 5 |
|
CN3 |
| LO Sphenolithus belemnos | 18.3 | 5 | NN4 |
|
| FO Sphenolithus belemnos | 19.2 | 5 | NN3 |
|
| FO Discoaster druggii | 23.2 | 5 | NN2 | CN1c |
| LO Reticulofenestra bisecta | 23.90 | 5 | NP25 | CP19 |
| LO Zygrhablithus bijugatus | 24.50 | 5 | NP25 | CP19 |
| LO Sphenolithus ciperoensis | 24.75 | 5 | NP25 | CP19 |
| LO Sphenolithus distentus | 27.5 | 5 | NP25/24 | CP19a/19b |
| LO Sphenolithus pseudoradians | 29.1 | 5 | NP24 | CP19 |
| FO Sphenolithus ciperoensis | 29.9 | 5 | NP24/23 | CP19/18 |
Notes: FO = first occurrence, FCO = first common occurrence, LO = last occurrence, LCO = last common occurrence. RE = reappearance. Zonal codes are those of Martini (1971) and Okada and Bukry (1980). Age references: 1 = Thierstein et al. (1977); 2 = Wei (1993); 3 = Raffi et al. (1993); 4 = Raffi and Flores (1995); 5 = Berggren et al., 1995b.