Table T23. Datum events of radiolarians, diatoms, silicoflagellates, ebridians, dinoflagellates, and paleomagnetics, Holes U1344A, U1344D, and U1344E. (See table notes.)
| Datum event |
Taxon/ magnetics |
Age (Ma) |
Depth CSF (m) | Depth CCSF-A (m) | ||||
|---|---|---|---|---|---|---|---|---|
| Hole U1344A | Hole U1344D | Hole U1344E | Hole U1344A | Hole U1344D | Hole U1344E | |||
| LO Lychnocanoma nipponica sakaii | Radiolarian | 0.05 | 23.7 | 26.6 | 19.9 | 25.1 | 30.0 | 23.6 |
| LO Spongodiscus sp. | Radiolarian | 0.28–0.32 | 109.2 | 102.6 | 108.0 | 124.4 | 118.6 | 125.5 |
| LO Axoprunum acquilonium | Radiolarian | 0.25–0.43 | 118.7 | — | 117.7 | 136.1 | — | 136.7 |
| LO Proboscia curvirostris | Diatom | 0.3 | 118.7 | 93.2 | 117.7 | 136.1 | 107.1 | 136.7 |
| LO Thalassirosira jouseae | Diatom | 0.3 | 118.7 | 102.6 | 97.0 | 136.1 | 118.6 | 111.8 |
| LO Stylatractus universus | Radiolarian | 0.41–0.51 | — | 150.3 | 150.3 | — | 176.0 | 177.1 |
| LO Dichtyocha subarctios | Silicoflagellate | 0.6–0.8 | 275.3 | 237.4 | — | 320.1 | 278.1 | — |
| Brunhes/Matuyama | Paleomagnetic | 0.781 | 276.5 | 284.1 | — | 322.1 | 332.2 | — |
| LCO Actinocyclus oculatus | Diatom | 0.9 | 409.3 | — | — | 455.7 | — | — |
| LO Eucyrtidium matuyamai | Radiolarian | 0.9–1.5 | 409.3 | — | — | 455.7 | — | — |
| Jaramillo top | Paleomagnetic | 0.998 | 348.4 | — | — | 394.8 | — | — |
| Jaramillo bottom | Paleomagnetic | 1.072 | 373.0 | — | — | 419.4 | — | — |
| Cobb Mountain top | Paleomagnetic | 1.173 | 412.6 | — | — | 459.0 | — | — |
| Cobb Mountain bottom | Paleomagnetic | 1.185 | 423.2 | — | — | 469.6 | — | — |
| LO Filisphaera filifera | Dinoflagellate | 1.4–1.7 | 462.6 | — | — | 509.0 | — | — |
| FCO Proboscia curvirostris | Diatom | 1.7–2.0 | 526.1 | — | — | 572.5 | — | — |
| LO Pyxidicula horridus | Diatom | 1.7–1.9 | 592.0 | — | — | 638.4 | — | — |
| Olduvai top | Paleomagnetic | 1.778 | 669.9 | — | — | 716.3 | — | — |
| LO Ammodochium rectangulare | Ebridian | 1.9 | 731.4 | — | — | 777.9 | — | — |
Notes: 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, FCO = first common occurrence, — = not applicable.
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