CALCAREOUS NANNOFOSSILS

GrpEvent Name                       Plotcode    Berggren 1985  Backman 1990
N  Emiliania huxley                 A Ehu               0.085
N  E. huxley                        B Ehu               0.275
N  Pseudoemiliania lacunosa         T Pla               0.474
N  Helicosphaera sellii             T Hse               1.37
N  Calcidiscus macintyrei           T Cma               1.45
N  Gephyrocapsa oceanica            B Goc               1.68
N  Gephyrocapsa caribbeanica        B Gca               1.74
N  Discoaster brouweri              T Dbr               1.9
N  Discoaster triradiatus           T Dtr               1.9
N  Gephyrocapsa aperta              B Gap               2.2
N  Discoaster asymmetricus          T Das               2.2
N  Discoaster pentaradiatus         T Dpe               2.4
N  Discoaster surculus              T Dsu               2.4
N  Discoaster tamalis               T Dta               2.6
N  Discoaster decoratus             T Dde               2.9
N  Discoaster variabilis            T Dva               2.9
N  Pseudoemiliania lacunosa         B Pla               3.4
N  Sphenolithus abies or neoabies   T Sna               3.47
N  Reticulofenestra pseudoumbilicus T Rps               3.5
N  small Gephyrocapsa               B sGe               3.6
N  Amaurolithus tricorniculatus     T Atr               3.7
N  Amourolithus delicatus           T Ade               3.7
N  Discoaster tamalis               B Dta               3.8
N  Discoaster asymmetricus          B Das               4.1
N  Amaurolithus tricorniculatus     T Apr               4.4
N  Ceratolithus rugosus             B Cru               4.5
N  Ceratolithus acutus              T Cac               4.57         4.85
N  Ceratolithus acutus              B Cac               5
N  Triquetrorhabdulus rugosus       T Tru               5            4.9
N  Discoaster quinqueramus          T Dqu               5.6          4.98
N  Discoaster berggrenii            T Dbe               5.6
N  Amaurolithus amplificus          T Aam               5.6
N  Amaurolithus amplificus          B Aam               5.9
N  Amaurolithus tricorniculatus     B Atr               6
N  Amaurolithus primus              B Apr               6.5          6.7
N  Amaurolithus delicatus           B Ade               6.5
N  Discoaster quinqueramus          B Dqu               8.2          7.46
N  Discoaster bollii                T Dbo               8.3
N  Catinaster calyculus             T Cca               8.75
N  Discoaster exilis                T Dex               8.8
N  Discoaster hamatus               T Dha               8.85         8.67
N  Catinaster coalitus              T Cco               9
N  Discoaster hamatus               B Dha              10           10.5
N  Catinaster calyculus             B Cca              10
N  Catinaster coalitus              B Cco              10.8         11.1
N  Cyclicargolithus floridanus      T  Cfl             11.6         13.1
N  Discoaster kugleri               B Dku              13.1         12.2
N  Triquetrorhabdulus rugosus       B Tru              14
N  Sphenolithus heteromorphus       T She              14.4         13.6
N  Helicosphaera ampliaperta        T Ham              16.2         16
N  Sphenolithus heteromorphus       B She              17.1         18.4
N  Sphenolithus belemnos            T Sbe              17.4         18.8
N  Sphenolithus belemnos            B Sbe              21.5         20
N  Discoaster druggii               B Ddr              23.2         23.6
N  Reticulofenestra bisecta         T Rbi              23.7
N  Reticulofenestra scrippsae       T Rsc              23.7
N  Reticulofenestra abisecta        T Rab              23.7