Table T6. Datum levels for radiolarians, Site 1260.
Core, section,
interval (cm)
Depth
Datum
Species
Zone
Age
Age
(Ma)
(mbsf)
(mcd)
207-1260A-






6R-CC, 0–5 45.79 45.79 B Podocyrtis goetheana RP16 middle Eocene ~38.8
8R-CC, 0–5 65.71 65.81 EVOL Podocyrtis chalara RP15 middle Eocene ~39.5
12R-CC, 15–22 104.96 103.58 EVOL Podocyrtis mitra RP14 middle Eocene ~42.8
15R-CC, 6–12 130.56 128.75 EVOL Podocyrtis ampla RP13 middle Eocene 44.5
16R-1, 0–3 134.50 132.69 B Eusyringium lagena RP12 middle Eocene ~49.0
19R-CC, 0–7 171.95 170.14 EVOL Thyrsocyrtis triacantha RP12 middle Eocene ~49.0
22R-CC, 0–5 192.10 190.29 FO Thyrsocyrtis robusta RP10 middle Eocene ~47.5
32R-CC, 22–25 292.35 291.58 B Buryella tetradica RP5 late Paleocene ~60.9

Note: B = bottom, EVOL = evolutionary transition between species, FO = first occurrence.