Table T5. Datum levels for planktonic foraminifers, Site 1257.
Core, section,
interval (cm)
Depth (mbsf)
Depth (mcd)
Datum
Species
Zone
Age
Age
(Ma)
Top
Bottom
Top
Bottom
207-1257A-








3H-2, 50–54 12.60 14.10 12.60 14.10 T Pseudohastigerina micra P18 early Oligocene 32.0
6X-3, 50–52 42.60 44.10 42.60 44.10 T Acarinina spp.* P14 middle Eocene 37.5–38.5
6X-3, 50–52 42.60 44.10 42.60 44.10 T Morozovella spinulosa* P14 middle Eocene 37.9
7X-4, 47–51 48.39 49.87 48.39 49.87 T Orbulinoides beckmanni P13 middle Eocene 40.1
8X-2, 47–48 56.07 57.61 56.07 57.61 B Orbulinoides beckmanni P13 middle Eocene 40.5
9X-5, 50–54 68.70 69.70 68.70 69.70 T Morozovella aragonensis P11 middle Eocene 43.6
9X-CC, 43–48 69.70 70.38 69.70 70.38 T Morozovella subbotinae* P6 early Eocene 50.8
9X-CC, 43–48 69.70 70.38 69.70 70.38 T Morozovella marginodentata* P6 early Eocene 52.3
10X-2, 50–54 73.80 75.30 73.80 75.30 T Morozovella formosa P6 early Eocene 54.0
11X-1, 49–54 83.49 84.61 83.49 84.61 B Igorina broedermanni P6 early Eocene 54.7
11X-1, 49–54 83.49 84.61 83.49 84.61 B Morozovella gracilis P6 early Eocene 54.9
11X-1, 49–54 83.49 84.61 83.49 84.61 B Morozovella marginodentata P6 early Eocene 54.8
11X-2, 27–32 83.49 84.61 83.49 84.61 T Morozovella velascoensis group P5 early Eocene 54.7
12X-2, 50–54 93.10 94.60 93.10 94.60 T Globanomalina pseudomenardii P4 late Paleocene 55.9
15X-CC, 39–44 131.32 131.60 130.91 131.19 B Acarinina soldadoensis P4 late Paleocene 56.5
16X-4, 49–52 136.09 137.50 139.72 141.13 B Globanomalina pseudomenardii P4 late Paleocene 59.2
16X-CC, 58–63 138.37 141.20 142.00 144.83 B Morozonella velascoensis* P3 late Paleocene 60.0
17X-1, 50–54 138.37 141.20 143.84 146.67 T Globotruncana spp.* KS31–KS30 Maastrichtian–Campanian 65.0
18X-CC, 27–32 159.98 161.58 165.78 167.38 B Globotruncana aegyptiaca* KS29–KS30 late Campanian 73.8
21X-CC, 0–5 179.90 190.60 185.70 196.40 B Contusotruncana fornicata* Not defined Santonian 88.0
25X-CC, 36–46 218.85 219.26 224.65 225.06 T Rotalipora spp.* KS19 late Cenomanian 94.0
207-1257B-








1R-2, 47–49 40.00 41.97 41.37 43.34 T Hantkenina spp. P16 late Eocene 33.7
1R-3, 74–77 41.97 43.74 43.34 45.11 T Acarinina spp.* P14 middle Eocene 37.5–38.5
3R-CC, 21–26 49.35 55.38 52.72 58.75 T Morozovella aragonensis P11 middle Eocene 43.6
4R-CC, 16–21 55.38 66.32 62.49 73.43 T Morozovella gracilis* P6 early Eocene 54.9
4R-CC, 16–21 55.38 66.32 62.49 73.43 T Morozovella formosa*
early Eocene 54.0
6R-CC, 10–15 73.90 80.07 76.95 84.44 T Morozovella velascoensis group P5 early Eocene 54.7
7R-1, 29–31 88.59 91.15 92.96 95.52 B Morozovella subbotinae P5 late Paleocene
7R-CC, 21–26 91.51 106.54 95.88 109.97 B Acarinina soldadoensis P4 late Paleocene 56.5
8R-CC, 21–26 91.51 106.54 95.88 109.97 T Globanomalina pseudomenardii P4 late Paleocene 55.9
11R-CC, 5–10 135.94 145.98 138.52 148.65 B Globanomalina pseudomenardii* P4 late Paleocene 59.2
12R-CC, 17–22 135.94 145.98 138.61 148.65 T Globotruncana spp.* KS30 early Maastrichtian–late Campanian 65.0
16R-CC, 4–9 170.14 186.66 173.34 189.86 B Globotruncana aegyptiaca* KS29~ late Campanian~ 73.8
207-1257C-








1R-CC, 14–19 86.23 88.28 86.23 88.28 T Morozovella velascoensis group P5 early Eocene 54.7
4R-CC, 15–20 110.60 120.65 112.60 123.05 T Globanomalina pseudomenardii P4 late Paleocene 55.9
6R-7, 59–64 139.69 148.98 140.89 151.43 B Globanomalina pseudomenardii* P4 late Paleocene 59.2
7R-CC, 19–24 139.69 148.98 140.89 151.43 T Globotruncana spp.* KS30 early Maastrichtian~late Campanian 65.0
8R-CC, 16–21 158.48 166.39 160.93 168.80 B Globotruncana aegyptiaca KS30 early Maastrichtian~late Campanian 73.8

Notes: Top and bottom depths refer to the range of possible depth in the core within which the datum is believed to fall. T = top, B = bottom. * = probable incomplete range.