Table T2. Datum events of radiolarians, calcareous nannofossils, diatoms, silicoflagellates, dinoflagellates, and ebridians, Holes U1341A, U1341B, and U1341C. (See table notes.)
| Datum event | Taxon |
Age (Ma) |
Depth (mbsf) | ||
|---|---|---|---|---|---|
|
Hole U1341A |
Hole U1341B |
Hole U1341C |
|||
| LO Lychnocanoma nipponica sakaii | Radiolarian | 0.05 | 7.83 | 4.36 | 10.49 |
| LO Amphimelissa setosa | Radiolarian | 0.08–1 | 7.83 | 13.65 | 20.18 |
| LO Spongodiscus sp. | Radiolarian | 0.28–0.32 | 36.55 | 42.44 | 57.93 |
| LO Axoprunum acquilonium | Radiolarian | 0.25–0.43 | 55.73 | 61.43 | — |
| FO Emiliania huxleyi | Calcareous nannofossil | 0.29 | — | — | 34.41 |
| LO Proboscia curvirostris | Diatom | 0.3 | 36.55 | 32.94 | 57.93 |
| LO Thalassiosira jouseae | Diatom | 0.3 | 36.55 | 32.94 | — |
| LO Proboscia barboi | Diatom | 0.3 | 36.55 | — | — |
| LO Stylatractus universus | Radiolarian | 0.41–0.51 | — | — | 57.93 |
| LO Pseudoemiliania lacunosa | Calcareous nannofossil | 0.44 | — | — | 53.52 |
| LO Dictyocha subarctios | Silicoflagellate | 0.6–0.7 | 55.73 | — | — |
| LCO Actinocyclus oculatus | Diatom | 0.9 | 131.68 | 118.42 | — |
| LO Eucyrtidium matuyamai | Radiolarian | 0.9–1.5 | 122.40 | 108.92 | 143.42 |
| LO Filisphaera filifera | Dinoflagellate | 1.4–1.7 | 202.99 | — | — |
| FO Eucyrtidium matuyamai | Radiolarian | 1.7–1.9 | 141.17 | 147.02 | 161.85 |
| RI Neodenticula seminae | Diatom | 1.778 | — | 245.51 | — |
| FO Proboscia curvirostris | Diatom | 1.7–2.0 | — | 162.45 | — |
| LO Stephanopyxis horridus | Diatom | 1.9–2.0 | — | 204.88 | — |
| LCO Neodenticula koizumii | Diatom | 2.1 ± 0.1 | 207.88 | 204.88 | — |
| LO Ammodochium rectangulare | Ebridian | 1.9 | 237.36 | 233.37 | — |
| LO Thecosphaera akitaensis | Radiolarian | 2.4–2.7 | — | 414.12 | — |
| LO Ebriopsis antiqua antiqua | Ebridian | 2.47–2.48 | 330.50 | 330.61 | — |
| LO Distephanus jimlingii | Silicoflagellate | 2.52 | 337.54 | 340.53 | — |
| LCO Neodenticula kamtschatica | Diatom | 2.7 | — | 362.20 | — |
| FO Neodenticula koizumii | Diatom | 3.7–3.9 | — | 463.02 | — |
| LO Dictyophimus bullatus/Dictyophimus sp. B | Radiolarian | 3.8–4.0 | — | 597.06 | — |
Notes: For first occurrences (FO), the depth was estimated as the midpoint between the depth at which the species was first observed and the depth of the next sample below. For last occurrences (LO), the depth was estimated as the midpoint between the depth at which the species was last observed and the depth of the next sample above. LCO = last common occurrence, RI = rapid increase, — = not applicable.
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