FIGURE 1. Location and geological map of the Tanzanian Drilling Project Eocene/Oligocene boundary sites (TDP 11, 12 and 17), additional Tanzanian Drilling Project sites in the area are also shown, modified from Nicholas et al. (2006). After Cotton and Pearson, (2011).

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FIGURE 2. Altaspiratella bearnensis (Curry, 1982); RGM 777374; 1: apical view, 2: apertural view. Bar equals 100 μm.

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FIGURE 3. Heliconoides nikkieae sp. nov.; 1: Holotype, RGM 777415a, apertural view; 2: apertural view, specimen lost; 3: paratype 1, RGM 777415b, umbilical view; 4: paratype 3, RGM 777 381, umbilical view; 5: paratype 2, RGM 777415c, apical view. Figures 3-1, -2, -3 and -5 from the type locality, TDP 17.36.1, 10-25 cm; Figure 3-4 from TDP 17.21.1, 9-20 cm. Bar equals 100 μm.

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FIGURE 4. Heliconoides nikkieae sp. nov.; holotype, RGM 777415a, 3dPDF. To download zipped file of all animated PDFs click here.

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FIGURE 5. Limacina robusta (Eames, 195); RGM 777423b, apertural view. Bar equals 100 μm.

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FIGURE 6. Limacina robusta (Eames, 1952), Holotype, Natural History Museum, London BM 68457. Rahki Nala (Pakistan, western Punjab); Kirthar Formation, Lower Chocolate Clays (late Lutetian - Priabonian); 1: apical, 2: apertural, 3: lateral view. Bar equals 100 μm.

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FIGURE 7. Limacina tanzaniaensis sp. nov. 1: Holotype, apertural view, RGM 777428b, TDP 17.38.2, 22-29 cm; 2: paratype 1, apertural view, RGM 777438, TDP 17.36.2, 80-95 cm; 3: paratype 2, umbilical view, RGM 777416b, TDP 17.36.1, 10-25 cm; 4: paratype 3, apical view, RGM 777416c, same data as 3. Bar equals 100 μm.

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FIGURE 8. Limacina tanzaniaensis sp. nov.; holotype, apertural view, RGM 777428b, 3dPDF.  To download zipped file of all animated PDFs click here.

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FIGURE 9. Limacina timi sp. nov.; 1: holotype, RGM 1007748b; 2: paratype 1, RGM 777408a; 3: paratype 2, RGM 777408b; 4: paratype 3, RGM 777414 m;. Apertural views. Bar equals 100 μm.

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FIGURE 10. Limacina timi sp. nov.; holotype, RGM 1007748b, 3dPDF.  To download zipped file of all animated PDFs click here.

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FIGURE 11. Limacina sp. 1. 1: RGM 777440c; apical view; 2: RGM 777440b; apertural view. Bar equals 100 μm.

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FIGURE 12. Limacina sp. 2, RGM 777373,; 1: apertural, 2: apical, 3: oblique apical, and 4: umbilical views. Bar equals 100 μm.

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FIGURE 13. Bovicornu aff. eocenense Meyer, 1886; 1: RGM 777370, apertural view; 2: RGM 1007784, basal view. Bar equals 100 μm.

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FIGURE 14. Holotypes of Bovicornu eocenense Meyer, 1886 (1, 2) and B. gracile Meyer, 1887 (3, 4). Shell height of 1 = 2.8 mm, of 2 = 2.7 mm; 2 and 4 are magnifications of 1 and 3, respectively. Photographs after Hodgkinson et al. (1992, pl. 7, figures 9-12).

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FIGURE 15. Range chart of pteropods, combined data of TDP 11, 12 and 17, calibrated to composite depths. Basic stratigraphical data mainly from Pearson et al. (2008, figure 16).

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