Table T1. Calcareous nannofossil events (based on Raffi et al., 2006, with slight modification) used as biostratigraphic tie points in this study.
|
Taxon event
|
Zone (base) |
Age (Ma) |
|---|---|---|
| X Gephyrocapsa caribbeanica (>3.5 µm) - Emiliania huxleyi | 0.063 | |
| FO Emiliania huxleyi | NN21 | 0.291 |
| LO Pseudoemiliania lacunosa | NN19 | 0.436 |
| LCO Reticulofenestra asanoi | 0.9 | |
| RE Gephyrocapsa spp. medium II (≥4.5–<5.5 µm) | 1.04 | |
| FCO Reticulofenestra asanoi | 1.078* | |
| LO Gephyrocapsa spp. large (≥5.5 µm) | 1.24 | |
| LO Helicosphaera sellii | 1.34 | |
| FCO Gephyrocapsa spp. large (≥5.5 µm) | 1.46 | |
| FO Gephyrocapsa spp. large (≥5.5 µm) | 1.560 | |
| LO Calcidiscus macintyrei (>11 µm) | 1.60 | |
| FO Gephyrocapsa spp. medium (>3.5 µm) | NN19 | 1.67 |
| LO Discoaster brouweri | NN18 | 2.06 |
| AE Discoaster triradiatus | 2.135 | |
| LO Discoaster pentaradiatus | NN17 | 2.393 |
| LO Discoaster surculus | NN16 | 2.52 |
| LO Discoaster tamalis | 2.87 | |
| LO Sphenolithus spp. | 3.65 | |
| LO Reticulofenestra pseudoumbilicus (>7 µm) | NN15–NN14 | 3.79 |
| FCO Discoaster asymmetricus | 4.13 | |
| LO Amaurolithus primus | 4.50 | |
| LO Ceratolithus acutus | 5.04 | |
| FO Ceratolithus rugosus | NN13 | 5.12 |
| FO Ceratolithus acutus | 5.32 | |
| LO Discoaster quinqueramus | NN12 | 5.59 |
* = datum based on Atlantic or Mediterranean records. X = crossover in abundance, RE = reentrance, AE = acme end, FO = first occurrence, FCO = first consistent occurrence, LO = last occurrence, LCO = last consistent occurrence.
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