Table T6. Datum levels for radiolarians, Hole 1259A.
Core, section,
interval (cm)
Depth
Datum
Species
Zone
Age
Age
(Ma)
(mbsf)
(mcd)
207-1259A-






8R-CC, 11–17 72.20 72.20 LO Calocycletta serrata RN1 early Miocene ~20.5
9R-CC, 18–23 82.33 82.33 B Cyrtocapsella tetrapera RN1 early Miocene 23.6
16R-CC, 10–15 145.61 145.61 LO Spongatractus pachystylus RP16 middle Eocene ~37.7
18R-CC, 15–20 162.76 162.76 B Podocyrtis goetheana RP16 middle Eocene ~38.8
20R-CC, 8–13 185.77 185.77 EVOL Podocyrtis chalara RP15 middle Eocene ~39.5
21R-CC, 14–20 193.59 193.59 FO Sethochytris triconiscus Upper RP14 middle Eocene 40.0–42.0
22R-CC, 2–8 205.70 205.70 LO Podocyrtis fasciolata Lower RP14 middle Eocene 40.0–42.0
22R-CC, 2–8 205.70 205.70 FO Podocyrtis trachodes Top RP13 middle Eocene ~43.0
24R-CC, 21–24 220.67 220.67 EVOL Eusyringium fistuligerum Upper RP13 middle Eocene 43.0–44.0
25R-CC, 16–21 231.79 231.79 FO Eusyringium fistuligerum Top RP13 middle Eocene ~44.5
29R-CC, 12–17 274.17 274.17 EVOL Thyrsocyrtis triacantha RP12 middle Eocene ~47.5
30R-CC, 9–12 280.39 280.39 FO Dictyoprora mongolfieri RP11 middle Eocene ~48.5

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