Initial Reports Volume 192 Chapter 3, Table 8. List of Cretaceous planktonic foraminifer and calcareous nannofossil highest, lowest, and lowest common occurrences, Hole 1183A. Notes: HO = highest occurrence, LO = lowest occurrence, LCO = lowest common occurrence. ? = uncertain age assignment. Ages are from University of Utah Paleontology Database and calibrated to the Gradstein et al. (1995) timescale. Event Species Stage Core, section, interval (cm) Zone/Subzone Depth (mbsf) Age (Ma) HO M. mura upper Maastrichtian 39R-4, 100 CC25B 987.40 68.66 HO G. fornicata upper Maastrichtian 40R-3, 58 Gansseri 995.23 68.01 LO C. gallica upper Maastrichtian 41R-1, 55 CC25B 1001.95 68.66 HO R. pennyi upper Maastrichtian 41R-CC Gansseri 1004.26 68.20 LO G. gansseri upper Maastrichtian 41R-CC Gansseri 1004.26 71.37 LO M. praemura upper Maastrichtian 43R-1, 62 CC25B 1021.42 69.16 HO S. biarcus (closed) upper Maastrichtian 43R-1, 62 CC25B 1021.42 69.20 HO G. bicrescenticus upper Maastrichtian 43R-CC CC25B 1022.08 68.33 LO S. biarcus (elliptical) upper Maastrichtian 43R-CC CC25B 1022.08 69.73 LO R. subpennyi lower Maastrichtian 43R-CC Aegyptiaca 1022.08 ? LO Cribcrocorona spp. upper Maastrichtian 44R-CC CC25A 1031.28 ? HO U. trifidum lower Maastrichtian 45R-1, 56 CC24 1040.56 70.07 HO U. gothicum lower Maastrichtian 45R-1, 56 CC24 1040.56 70.07 HO Q. gartneri lower Maastrichtian 45R-1, 56 CC24 1040.56 70.40 LO P. excolata upper Campanian 45R-3, 1 Aegyptiaca 1042.71 72.70 HO R. elegans upper Campanian 46R-2, 22 CC22B 1051.22 74.00 HO A. cymbiformis var. NT upper Campanian 46R-2, 22 CC22B 1051.22 74.60 HO Tranolithus sp. 1 upper Campanian 46R-2, 22 CC22B 1051.22 74.60 LO R. levis upper Campanian 47R-CC CC22B 1060.70 74.72 LO G. ventricosa upper Campanian 47R-CC Ventricosa 1060.70 77.60 LO P. costulata upper Campanian 47R-CC Elevata 1060.70 79.10 LO U. trifidum upper Campanian 48R-1, 49 CC22A 1069.29 75.30 HO A. parcus parcus upper Campanian 48R-2, 49 CC 21 1070.79 75.18 HO B. bevieri upper Campanian 48R-2, 49 CC 21 1070.79 75.20 HO W. fossacincta upper Campanian 48R-2, 49 CC 21 1070.79 76.03 HO E. eximius upper Campanian 49R-CC CC 21 1078.66 76.33 HO C. ovalis upper Campanian 49R-CC CC 21 1078.66 77.15 LO U. gothicum upper Campanian 49R-CC CC 21 1078.66 77.20 LO B. magnus upper Campanian 49R-CC CC 21 1078.66 77.18 HO B. hayii lower Campanian 50R-1, 88 CC19A 1089.08 78.90 HO C. crassus lower Campanian 50R-1, 112 CC18 1089.32 80.70 HO M. furcatus lower Campanian 50R-1, 112 CC18 1089.32 81.24 LO A. parcus constrictus lower Campanian 50R-2, 20 CC18 1089.90 82.42 LO A. parcus parcus lower Campanian 50R-2, 20 CC18 1089.90 83.17 LO C. crassus upper Santonian 50R-2, 35 KN24 1090.05 83.90 HO Q. enebrachium lower Santonian 50R-2, 60 KN25 1090.30 85.27 HO E. floralis upper Coniacian 50R-2, 68 KN28 1090.38 86.20 LO M. cubiformis upper Coniacian 50R-2, 74 KN28 1090.44 86.50 LO M. staurophora middle Coniacian 50R-2, 74 KN28 1090.44 86.92 LO M. furcatus lower Coniacian 50R-2, 74 KN28 1090.44 89.03 HO M. chiastius upper Cenomanian 50R-2, 78 NC10A 1090.48 93.48 HO G. bentonensis upper Cenomanian 50R-2, 78 Archaeocretacea 1090.48 3.50 HO A. infracretacea upper Albian 50R-2, 78 NC10A 1090.48 99.75 LO R. appenninica upper Albian 50R-CC Oppenninica 1091.78 ? LO E. turriseiffelii upper Albian 51R-CC NC10A 1101.59 100.00 HO H. irregularis upper Albian 52R-1, 79 NC9B 1108.29 100.02 TR C. burwellensis upper Albian 52R-1, 79 NC9B 1108.29 100.53 HO C. erbae Aptian/Albian boundary 52R-3, 107 NC8A 1111.57 112.20 LO H. rischi lower Albian 52R-CC Rischi 1113.38 110.06 LO P. columnata base Albian 53R-3, 21 NC8A 1120.38 112.03 HO G. barri base Albian 53R-3, 21 Cheniourensis 1121.12 112.03 LO H. trochoidea upper Aptian 53R-3, 95 Gorbachikae 1121.40 ? LCO R. achlyostaurion upper Aptian 54R-2, 5 NC7C 1128.35 ? LO G. algerianus upper Aptian 54R-2, 31 Algerianus 1128.61 116.20 HO L. salomonii upper Aptian 54R-2, 35 NC7A 1128.64 116.75 HO L. cabri top lower Aptian 54R-3, 96 Cabri 1130.13 117.00 LO E. floralis top lower Aptian 54R-3, 119 NC7A 1130.36 118.10 LO R. gallagheri middle lower Aptian 54R-3, 119 NC7A 1130.36 120.78 HO P. sigali middle lower Aptian 54R-4, 7 Cabri 1130.74 ?