Table T5. Datum levels for planktonic foraminifers, Site 1258.
Core, section,
interval (cm)
Depth (mbsf) Depth (mcd)
Datum
Species
Zone
Age
Age
(Ma)
Top
Bottom
Top
Bottom
207-1258A-








1R-CC, 6–11 5.04 5.60 5.04 5.60 B Globorotalia fohsi robusta* M9 middle Miocene 13.2
2R-2, 50–53 5.60 7.10 5.60 7.10 T Chiloguembelina spp. P21b late Oligocene 27.1
2R-3, 50–53 8.60 10.10 8.60 10.10 B Globigerina angulisuturalis* P21a and P12 mix early Oligocene 29.4
3R-5, 50–54 20.70 22.20 20.70 22.20 B Guembelitrioides nuttali P10 middle Eocene 49.0
9R-2, 49–51 73.89 75.35 74.14 75.60 B Planorotalites palmerae P9 early Eocene 50.4
11R-3, 50–53 93.30 94.80 93.00 94.50 T Morozovella formosa P7 early Eocene 50.8
13R-7, 49–53 119.99 120.03 120.60 120.64 B Morozovella aragonensis P7 early Eocene 52.3
21R-CC, 16–21 185.57 197.49 209.00 220.92 T Globanomalina pseudomenardii P4 late Paleocene 55.9
26R-7, 50–54 244.50 245.47 266.95 267.92 B Globanomalina pseudomenardii P4 late Paleocene 59.2
27R-3, 0–2 248.30 249.80 270.75 272.25 B Subbotina triloculinoides P1b early Paleocene 64.5
27R-4, 0–2 248.30 249.80 270.75 272.25 T Parvulorugoglobigerina eugubina P early Paleocene 64.5
28R-1, 5–6 252.60 254.95 275.05 277.40 T Abathomphalus mayaroensis KS31 late Maastrichtian 65.0
29R-CC, 13–18 274.52 279.31 296.97 301.68 B Abathomphalus mayaroensis KS31 late Maastrichtian 68.6
33R-CC, 0–5 312.81 320.24 334.92 345.13 B Globotruncana aegyptiaca* KS29–KS30 early Maastrichtian–late Campanian 73.8
47R-CC, 0–5 429.42 430.75 454.30 458.37 T Rotalipora spp.* Not defined Cenomanian 96.6
50R-CC, 0–3 446.22 447.50 483.01 484.29 B Biticinella breggiensis KS14 Albian 105.0
207-1258B-








1R-CC, 18–23 0 7.65 2.90 10.55 T Pseudohastigerina micra* P18 early Oligocene 32.0
2R-CC, 7–12 18.16 32.04 18.16 32.04 B Guembelitrioides nuttali P10 middle Eocene 49.0
8R-CC, 22–27 78.74 78.96 78.27 78.49 B Planorotalites palmerae P9 early Eocene 50.4
11R-CC, 6–12 98.14 108.76 97.47 108.39 T Morozovella formosa P7 early Eocene 50.8
12R-CC, 0–5 117.40 128.03 118.00 127.42 B Morozovella aragonensis P7 early Eocene 52.3
18R-CC, 6–11 166.37 175.14 166.96 175.73 T Morozovella velascoensis group P5 early Eocene 54.7
23R-CC, 14–19 223.52 243.57 246.15 264.82 B Globanomalina pseudomenardii P4 late Paleocene 59.2
27R-CC, 20–23 243.57 253.94 264.82 277.37 T Abathomphalus mayaroensis KS31 late Maastrichtian 65.0
34R-CC, 20–25 320.70 321.22 340.89 341.61 B Gansserina gansseri KS30 early Maastrichtian–late Campanian 72.8
52R-CC, 31–37 433.25 435.36 457.57 459.68 T Rotalipora cushmani KS19 late Cenomanian 94.0
56R-1, 61–64 451.81 453.36 476.38 477.93 B Biticinella breggiensis KS14 Albian 105.0
207-1258C-








8R-CC, 18–23 186.20 197.02 185.09 199.31 T Morozovella velascoensis group P5 late Paleocene 54.7
12R-CC, 19–22 254.90 264.82 267.33 277.25 T Cretaceous species KS30–KS31 Maastrichtian 65.0
27R-1, 85–89 448.35 449.78 479.73 481.16 B Biticinella breggiensis KS14 Albian 105.0

Notes: Top and bottom depth values refer to the range of possible depths in the core within which the datum is believed to fall. B = bottom, T = top. * = probably reflect incomplete ranges of the foraminiferal marker species.