Figure F7. Abundance variations of selected species in the late Miocene to basal Pleistocene from Hole 1130A. A generalized late Miocene trend is that Globoturborotalita woodi dominated the Zone SAN17 assemblage, Globigerina bulloides and G. falconensis both increased their abundance in Zone SAN18 and Subzone SAN19a, and a steady increase in Globigerinoides (Gs. extremus), Globorotalia margaritae, and Globoconella (G. sphericomiozea) characterized Subzones SAN19a and SAN19b. Globorotalia crassaformis was abundant in the early Pliocene, reaching a maximum of ~30% in the slump close to the early/late Pliocene boundary probably due to the robustness of its tests. In the late Pliocene, Globigerinoides ruber, Globoconella inflata, and Globigerina falconensis increased to become dominant but Globigerinoides trilobus and Menardella spp. declined to a minimum.

Figure F7. Abundance variations of selected species in the late Miocene to basal Pleistocene from Hole 1130A. A generalized late Miocene trend is that Globoturborotalita woodi dominated the Zone SAN17 assemblage, Globigerina bulloides and G. falconensis both increased their abundance in Zone SAN18 and Subzone SAN19a, and a steady increase in Globigerinoides (Gs. extremus), Globorotalia margaritae, and Globoconella (G. sphericomiozea) characterized Subzones SAN19a and SAN19b. Globorotalia crassaformis was abundant in the early Pliocene, reaching a maximum of ~30% in the slump close to the early/late Pliocene boundary probably due to the robustness of its tests. In the late Pliocene, Globigerinoides ruber, Globoconella inflata, and Globigerina falconensis increased to become dominant but Globigerinoides trilobus and Menardella spp. declined to a minimum.