Table T1. Radiolarian zonation used during Expedition 303.
| Epoch | North Atlantic zonation* | Event (bottom) |
Age (Ma) | |
|---|---|---|---|---|
| BKV85 | CK95 | |||
| Pleistocene | C. davisiana davisiana | FO C. davisiana davisiana | 0.0/2.6 | 0.0/2.7 |
| Pliocene | C. davisiana davisiana | FO C. davisiana davisiana | 0.0/2.6 | 0.0/2.7 |
| Spongaster? tetras | FO S.? tetras | 2.6/2.9–3.1 | 2.7/3.0–3.2 | |
| Pseudodictyophimus gracilipes tetracanthus | FO P. gracilipes tetracanthus | 2.9–3.1/4.0 | 3.0–3.2/4.4 | |
| Antarctissa whitei | LO L. circus | 4.0/5.2 | 4.4/5.7 | |
| late Miocene | Liriospyris circus | FO L. circus | 5.2/5.5 | 5.7/6.1 |
| Tessarastrum thiedei | FO T. thiedei | 5.5/6.2 | 6.1/6.7 | |
| Larcospira bulbosa | FO L. bulbosa | 6.2/6.3–6.9 | 6.7/6.8–7.7 | |
| Hexalonche esmarki | FO H. esmarki | 6.3–6.9/7.7–7.9 | 6.8–7.7/8.5–8.6 | |
Note: * = zonation from Goll and Bjørklund, 1989. FO = first occurrence, LO = last occurrence. BKV85 = Berggren et al., 1985, CK95 = Cande and Kent, 1995.
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