Plate 12. 1, 2 Globigerina bulloides d’Orbigny; 1 umbilical view and 2 spiral view. 3, 4 Globoturborotalita rubescens Hofker; 3 umbilical view and 4 spiral view. 5, 6 Turborotalita quinqueloba (Natland); 5 umbilical view and 6 spiral view. 7, 8 Globigerinoides ruber (d’Orbigny). 9, 10 Globigerinoides sacculifer (Brady); 9 umbilical view and 10 spiral view. 11, 12 Globigerinella digitata (Brady); 11 umbilical view and 12 spiral view. 13-15 Globigerinella siphonifera (d’Orbigny); 13 umbilical view, 14 peripheral view and 15 spiral view. Each scale bar represents 100 microns.