502 A 5/30/91MPB Keigwin, p.269 502 AGrpEvent Plotcode Y. Age Old Age Top depth Bottom depth 502 AD 0.00 0.00 0.00 502 AF BT G.fistulosus Bfst 2.90 20-1,50 20-1,100 502 AF TOP Sph.psis spp TSdp 3.00 20-1,100 20-2,52 502 AF BT Sph.ella dehiscens s.s. BSdd 3.00 23,CC 24-1,100 502 AF BT G.pertenuis Bprt 3.30 21,CC 22-2,100 502 AF BT G.miocenica Bmio 3.40 19,CC 20-1,50 502 AF TOP G.margaritae Tmgt 3.40 23-2,100 23-3,100 502 AF TOP P.primalis TPpr 3.50 21,CC 22-2,100 502 AF Pulleniatina s->d sdP 3.80 26,CC 27,CC 502 AF TOP G.nepenthes Tnep 3.90 28-2,100 29,CC 502 AF BT G.crassaformis s.s. Bcrs 4.10 29,CC 30,CC 502 AF TOP G.seiglei Tsgl 4.30 32,CC 33-3,10 502 AF BT Sph.ella dehiscens BSdd 5.10 23,CC 24-1,100 502 AF BT G.tumida Btum 5.20 37,CC 38,CC 502 AF BT G.cibaoensis Bcbn 5.30 29,CC 30,CC 502 AF TOP G.dehiscens TGqd 5.30 42,CC 43,CC 502 AF BT G.margaritae Bmgt 5.60 38,CC 38,CC 502 AF BT P.primalis BPpr 5.80 29,CC 30,CC 502 AF BT N.humerosa Bhum 7.50 45,CC 46,CC 502 AM Brunhes B1N1 0.73 5-2,60 5-2,70 502 AM Jaramillo T1N2 0.91 6-1,80 6-1,90 502 AM Jaramillo B1N2 0.98 6-3,15 6-3,25 502 AM Olduvai T2N1 1.66 10-2,105 10-2,115 502 AM Olduvai B2N1 1.88 12-1,90 12-1,100 502 AM Gauss (^kaena) T2AN2 2.99 19-1,140 19-1,145 502 AM Gauss B2AN2 3.08 19-3,20 19-3,50 502 AM Gauss (^mammoth) T2AN3 3.18 20-2,90 20-2,100 502 AM Gauss B2AN3 3.40 22-2,30 22-2,70 502 AM Gilbert-nunivak T3N2 4.10 28-1,70 28-1,90 502 AM Gilbert-nunivak B3N2 4.24 29-1,100 29-1,120 502 AM Gilbert-thvera B3N4 4.77 34-1,90 34-1,100 502 AN Emiliania huxleyi B Ehu 0.28 2-CC 3-CC 502 AN Pseudoemiliania lacunosa T Pla 0.47 2-CC 3-CC 502 AN Helicosphaera sellii T Hse 1.37 6-CC 7-CC 502 AN Discoaster brouweri T Dbr 1.90 11-CC 12-CC 502 AN Discoaster pentaradiatus T Dpe 2.40 12-CC 13-CC 502 AN Discoaster surculus T Dsu 2.40 15-CC 16-CC 502 AN Discoaster tamalis T Dta 2.60 16-CC 17-CC 502 AN Reticulofenestra pseudoumbilicus T Rps 3.50 21-CC 22-CC 502 AN Discoaster asymmetricus B Das 4.10 30-CC 31-CC 502 AN Ceratolithus rugosus B Cru 4.50 30-CC 31-CC 502 AN Ceratolithus acutus T Cac 4.57 31-CC 32-CC 502 AN Ceratolithus acutus B Cac 5.00 35-CC 36-CC 502 AN Discoaster quinqueramus T Dqu 5.60 33-CC 34-CC 502 AN Amaurolithus primus B Apr 6.50 59-CC 60-CC 502 AR 0.00 0.00 0.00