577 5/16/91CSC&DBL Spenc-Cerv&Laz 93; Barron,85,Koizumi,86 577 GrpEvent Plotcode Y. Age Old Age Top depth Bottom depth 577 D top N.reinholdii tNr 0.47 2-1,47 2-2,47 577 D top N.fossilis tNf 0.55 2-3,47 2-4,47 577 D base P.doliolus bPd 2.00 3-5,74 3-6,74 577 D top N.jouseae tNj 2.50 4-3,61 4-4,61 577 D base N.reinholdii bNr 6.70 6-4,30 6-5,30 577 D top T.plicata tTp 0.80 3-4,74 3-5,74 577 D top R.praebergonii tRp 1.66 3-4,74 3-5,74 577 D top T.convexa tTc 2.30 4-2,61 4-3,61 577 D base R.praebergonii bRp 2.58 4-2,61 4-3,61 577 D top A.ellepticus f.lanceolata tAel 3.20 4-3,61 4-4,61 577 D base N.jouseae bNj 4.50 5-CC 6-1,30 577 D base T.oestrupii bTo 5.35 5-6,56 5-CC 577 D base T. convexa bTc 6.60 6-4,30 6-5,30 577 D base N.marina bNm 7.40 6-7,30 6-CC 577 D base N.fossilis bNf 8.70 5-CC 6-1,30 577 D top A.moronensis tAm 8.90 4-3,61 4-4,61 577 M Brunhes B1N1 0.73 2-2,130 2-3,20 577 M Jaramillo T1N2 0.91 2-3,119 2-3,140 577 M Jaramillo B1N2 0.98 2-4,30 2-4,80 577 M Olduvai T2N1 1.66 3-2,120 3-4,41 577 M Olduvai B2N1 1.88 3-4,85 3-4,140 577 M Gauss T2AN1 2.47 4-2,10 4-2,70 577 M Gauss B2AN1 2.92 4-5,120 4-6,14 577 M Gauss (^mammoth) T2AN3 3.18 5-2,41 5-2,90 577 M Gauss B2AN3 3.40 5-4,90 5-4,140 577 M Gilbert-nunivak T3N2 4.10 6-1,90 6-1,140 577 M Gilbert-nunivak B3N2 4.24 6-2,90 6-2,140 577 M Gilbert-sidufjall T3N3 4.40 6-3,140 6-4,40 577 M Gilbert-sidufjall B3N3 4.47 6-4,90 6-4,130 577 M Gilbert-thvera T3N4 4.57 6-5,40 6-5,90 577 M Gilbert-thvera B3N4 4.77 6-7,9 7-1,40 577 M 3A/chron 5 T3AN1 5.35 7-3,40 7-3,90 577 N Emiliania huxleyi A Ehu 0.09 1-1,50 1-1,125 577 N annula T Pla 0.47 1-4,40 1-5,46 577 N Calcidiscus macintyrei T Cma 1.45 2-6,40 3-1,103 577 N Gephyrocapsa oceanica B Goc 1.68 3-1,103 3-2,96 577 N Gephyrocapsa caribbeanica B Gca 1.74 2-4,43 2-5,35 577 N Discoaster brouweri T Dbr 1.90 3-3,96 3-4,96 577 N Discoaster triradiatus T Dtr 1.90 3-5,44 3-5,110 577 N Gephyrocapsa aperta B Gap 2.20 2-1,103 2-2,43 577 N Discoaster asymmetricus T Das 2.20 5-3,33 5-4,30 577 N Discoaster pentaradiatus T Dpe 2.40 4-1,33 4-1,112 577 N Discoaster surculus T Dsu 2.40 4-2,30 4-2,112 577 N Discoaster tamalis T Dta 2.60 4-3,25 4-3,112 577 N Discoaster variabilis T Dva 2.90 5-5,70 6-1,20 577 N Pseudoemiliana lacunosa B Pla 3.40 5-4,95 5-5,70 577 N Sphenolithus abies/neoabies T Sna 3.47 6-1,120 6-2,60 577 N Reticulofenestra pseudoumbilicus T Rps 3.50 5-4,95 5-5,70 577 N Amaurolithus tricorniculatus T Atr 3.70 5-5,70 6-1,20 577 N Amaurolithus delicatus T Ade 3.70 5-3,33 5-4,30 577 N Discoaster tamalis B Dta 3.80 6-1,20 6-1,120 577 N Discoaster asymmetricus B Das 4.10 7-2,130 7-3,20 577 N Amaurolithus tricorniculatus T Apr 4.40 6-2,120 6-3,20 577 N Ceratolithus rugosus B Cru 4.50 6-4,60 6-4,120 577 N Ceratolithus acutus T Cac 4.57 6-7,12 6-CC 577 N Ceratolithus acutus B Cac 5.00 6-CC 7-1,20 577 N Triquetrorhabdulus rugosus T Tru 5.00 7-3,20 7-3,130 577 N Discoaster quinqueramus T Dqu 5.60 7-1,130 7-2,20 577 N Discoaster berggrenii T Dbe 5.60 7-3,130 7-4,43 577 N Amaurolithus amplificus T Aam 5.60 7-1,130 7-2,20 577 N Amaurolithus amplificus B Aam 5.90 7-2,20 7-2,130 577 N Amaurolithus tricorniculatus B Atr 6.00 7-2,130 7-3,20 577 N Amaurolithus primus B Apr 6.50 7-3,130 7-4,43 577 N Amaurolithus delicatus B Ade 6.50 7-3,20 7-3,130 577 N Discoaster quinqueramus B Dqu 8.20 7-3,130 7-4,43 577 N Discoaster exilis T Dex 8.80 7-3,130 7-4,43 577 R B Cycladophora davisiana BCYDA 2.70 4-4,25 4-CC 577 R B Eucyrtidium matuyami BEUMA 1.90 3-4,67 3-CC 577 R B Lamprocyrtis nigriniae (haysi) BLMNI 0.80 2-4,63 2-CC 577 R B Sphaeropyle langii BSHLA 4.70 5-CC 6-4,57 577 R B Theocorythium trachelium BTHTR 2.80 4-4,25 4-CC 577 R T Eucyrtidium matuyami TEUMA 1.00 1-CC 2-4,63 577 R T Lychnocanium grande TLYGR 0.50 1-1,5 1-3,65 577 R T Stichocorys peregrina TSCPE 2.80 4-4,25 4-CC 577 R T Stylatractus universus TSYUN 0.35 1-1,5 1-3,65 577 R B Stylacontarium aquilonium BSLAQ 4.50 5-3,70 5-CC 577 R B Lamprocyrtis heteroporos BLMHE 4.40 5-3,70 5-CC 577 R T Lamprocyrtis neoheteroporos TLMNE 0.50 1-CC 2-4,63