Table T1. Age estimates of calcareous nannofossil datum events considered for Expedition 346.
| Event and species | Age (Ma) |
Zone/Subzone (base) |
Reference |
|---|---|---|---|
| FO Emiliania huxleyi | 0.29 | NN21, CN15 | Gradstein et al., 2012 |
| LO Pseudoemiliania lacunosa | 0.44 | NN20, CN14b | Gradstein et al., 2012 |
| LO Reticulofenestra asanoi | 0.91 | Gradstein et al., 2012 | |
| Br Gephyrocapsa (>4 µm) | 1.04 | Gradstein et al., 2012 | |
| FCO Reticulofenestra asanoi | 1.14 | Lourens et al., 2004 | |
| LO Gephyrocapsa (>5.5 µm) | 1.24 | Gradstein et al., 2012 | |
| LO Helicosphaera sellii | 1.34 | Lourens et al., 2004 | |
| LO Calcidiscus macintyrei | 1.60 | Gradstein et al., 2012 | |
| FO Gephyrocapsa (>5.5 µm) | 1.62 | Gradstein et al., 2012 | |
| FO Gephyrocapsa (>4 µm) | 1.73 | Gradstein et al., 2012 | |
| LO Discoaster brouweri | 1.93 | NN19, CN13a | Gradstein et al., 2012 |
| LO Discoaster triradiatus | 1.95 | Gradstein et al., 2012 | |
| FCO Discoaster triradiatus | 2.14 | Lourens et al., 2004 | |
| LO Discoaster pentaradiatus | 2.39 | NN18 | Gradstein et al., 2012 |
| LO Discoaster surculus | 2.49 | NN17 | Gradstein et al., 2012 |
| Pliocene⁄Pleistocene boundary | 2.59 | Gradstein et al., 2012 | |
| LO Discoaster tamalis | 2.80 | Gradstein et al., 2012 | |
| LO Sphenolithus spp. | 3.54 | Gradstein et al., 2012 | |
| LO Reticulofenestra pseudoumbilica | 3.70 | NN16, CN12 | Gradstein et al., 2012 |
| LO Amaurolithus tricorniculatus | 3.92 | NN15 | Gradstein et al., 2012 |
| FCO Discoaster asymmetricus | 4.13 | NN14 | Gradstein et al., 2012 |
| LO Amaurolithus primus | 4.50 | CN11 | Gradstein et al., 2012 |
| LO Ceratolithus acutus | 5.04 | Gradstein et al., 2012 | |
| FO Ceratolithus rugosus | 5.12 | NN13 | Gradstein et al., 2012 |
| LO Triquetrorhabdulus rugosus | 5.28 | Gradstein et al., 2012 | |
| Miocene⁄Pliocene boundary | 5.33 | Gradstein et al., 2012 | |
| FO Ceratolithus acutus | 5.35 | Gradstein et al., 2012 | |
| LO Discoaster quinqueramus | 5.59 | NN12, CN10 | Gradstein et al., 2012 |
| LCO Nicklithus amplificus | 5.94 | Gradstein et al., 2012 | |
| X Nicklithus amplificus/T. rugosus | 6.79 | Gradstein et al., 2012 | |
| FO Nicklithus amplificus | 6.91 | Gradstein et al., 2012 | |
| FO Amaurolithus spp. | 7.42 | Gradstein et al., 2012 | |
| LO Discoaster loeblechii | 7.53 | Gradstein et al., 2012 | |
| FO Discoaster quinqueramus | 8.12 | Gradstein et al., 2012 | |
| FO Discoaster berggrenii | 8.29 | NN11, CN9 | Gradstein et al., 2012 |
| LO Discoaster bollii | 9.21 | Gradstein et al., 2012 | |
| LO Catinaster calyculus | 9.67 | Gradstein et al., 2012 | |
| LO Discoaster hamatus | 9.69 | NN10, CN8 | Lourens et al., 2004 |
| LO Catinaster coalitus | 9.69 | Gradstein et al., 2012 | |
| FO Discoaster hamatus | 10.55 | NN9, CN7 | Gradstein et al., 2012 |
| FO Catinaster calyculus | 10.79 | Gradstein et al., 2012 | |
| FO Catinaster coalitus | 10.89 | NN8, CN6 | Gradstein et al., 2012 |
| LO Coccolithus miopelagicus | 10.97 | Gradstein et al., 2012 | |
| LCO Discoaster kugleri | 11.58 | Gradstein et al., 2012 | |
| FCO Discoaster kugleri | 11.90 | NN7 | Gradstein et al., 2012 |
| LO Coronocyclus nitescens | 12.12 | Gradstein et al., 2012 | |
| LO Calcidiscus premacintyrei | 12.38 | Gradstein et al., 2012 | |
| LCO Cyclicargolithus floridanus | 13.28 | Gradstein et al., 2012 | |
| LO Sphenolithus heteromorphus | 13.53 | NN6, CN5 | Gradstein et al., 2012 |
| LO Helicosphaera ampliaperta | 14.91 | NN5, CN4 | Gradstein et al., 2012 |
FO = first occurrence, LO = last occurrence, FCO = first common occurrence, LCO = last common occurrence, Br = base reentrance, X = abundance crossover. Bold = zonal markers.
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