TROPICAL AND NORTH PACIFIC DIATOMS GrpEvent Name Plotcode Pmag Cal.* D top N.reinholdii tNr 0.65 x D top T.plicata tTp 0.80 D top N.fossilis tNf 0.85 D top R.matuyamai tRm 0.94 x D base R.matuyamai bRm 1.10 x D top R.praebergonii v. robusta bRpr 1.55 x D base Azpeitia barronii tAb 1.60 D base P.doliolus bPd 1.80 x D top R.praebergonii tRp 1.85 x D top T.convexa tTc 2.10 x D top N.jouseae tNj 2.60 x D base R.praebergonii bRp 3.00 x D top A.ellepticus f.lanceolata tAel 3.20 D base T.convexa v.convexa bTcc 3.60 x D base A.elegans bAe 3.90 x D top N.cylindrica tNc 4.30 x D base N.jouseae bNj 4.50 x D base T.oestrupii bTo 5.10 x D top T.miocenica tTm 5.10 x D top A.acutiloba tAa 5.35 x D top N.miocenica tNm 5.55 x D top N.miocenica v.elongata tNme 5.65 x D top T.praeconvexa tTp 5.80 x D top R.praepaleacea tRpp 6.00 x D base T.miocenica bTm 6.10 x D base T.convexa v.aspinosa bTca 6.10 x D base T.praecovexa bTp 6.30 x D top N.porteri tNp 6.70 x D base N.miocenica bNm 6.70 x D top R.paleacea tRp 6.90 x D top T.burckliana tTb 7.00 x D base N.reinholdii bNr 7.30 D top A.ellipticus v.javanicus tAej 7.30 D base N.marina bNm 7.40 D top T.yabei tTy 7.50 x D base N.cylindrica bNc 7.60 D base Azpeitia nodulifer v.cyclopus bAnc 7.70 x D top T.yabei v.elliptica tTye 7.90 D top C.loeblichii tCl 7.90 D top C.temperei v.delicata tCtd 8.05 D base N.fossilis bNf 8.10 D base T.yabei v.elliptica bTye 8.10 D base T.burckliana bTb 8.20 x D base C.loeblichii bCl 8.40 D top A.vetustissimus v.javanica tAvj 8.50 x D base A.vetustissimus v.javanica bAvj 8.75 D top A.moronensis tAm 8.90 x D base A.ellipticus f.lanceolata bAel 9.90 D top C.tuberculatus tCt 10.10 x D top S.jouseana tSj 10.40 D top C.coscinodiscus tCc 10.60 x D base R.paleacea v.elongata bRpe 10.60 D top D.punctata tDp 10.60 x D base T.robusta bTr 10.60 D top C.gigas v.diorama tCgd 10.70 D top A.ellipticus v.spiralis tAes 10.80 D base H.cuneiformis bHc 11.10 x D base R.praepaleacea bRpp 11.45 D base C.temperei v.delicata bCtd 11.50 x D top A.ingens tAi 11.50 D base N.porteri bNp 11.70 D top D.nicobarica tDn 12.20 D top Annellus californicus tAc 12.40 15.0??? D top Azpeitia salisburyanus tAs 12.50 D base C.gigas v.diorama bCgd 12.60 D top C.lewisianus tCl 12.70 x D top Cestodiscus pulchellus tCp 12.90 D base D.punctata bDp 13.00 D top T.tappanae tTt 13.25 x D base Azpeitia nodulifer bAn 13.30 D base T.cinnamomeum bTc 13.40 D base T.grunowii bTg 13.40 D base D.hustedtii main tDhm 13.60 x D base C.tuberculatus bCt 13.90 x D top C.pulchellus v.maculatis tCpm 13.90 D base A. ellipticus v.spiralis bAes 14.20 D top Cestodiscus peplum tCp 14.20 x D base C.peplum bCp 16.30 x? D top T.bukryi tTb 17.00 x? D base D. nicobarica bDn 17.80 x? D top Craspedodiscus elegans tCe 18.70 x? D top Bogorovia veniamini tBv 19.90 D top C.oligocenicus tCo 20.60 D top T.primalabiata tTp 21.70 D base R.paleacea bRp 22.70 D base Rocella gelida bRg 24.50 ?? D base B.veniamini bBv 26.50 *=direct calibration to paleomagnetic stratigraphy ANTARCTIC DIATOMS GrpEvent Name Plotcode Leg 120* D LAD H. karstenii tHk 0.195 D LAD R. robusta tRr 0.8 1.6 D LAD Actinocyclus ingens tAi 0.6g 0.62 D LAD Coscinodiscus elliptopora tCe 0.65c D LAD A. webbi tAw 0.8 D LAD N. barronii tNb 1.25 D LAD Rhizosolenia barboi tRb 1.58b D LAD T. torokina tTt 1.8 D LAD T. fasciculatus tTf 1.6 D FAD A. webbi bAw 1.7 D FAD A. fasciculatus bAf 1.7 D LAD A. maccollumii tAm 1.7 2.8 D FAD A. fasciculatus bAf 1.7 2.8 D LAD Thalassiosira kolbei tTk 1.75 1.89b D LAD T. inura tTi 1.75 D LAD T. vulnifica tTv 2.2 D FAD Coscinodiscus elliptopora bCe 2.2c D FAD A. hookeri bAh 2.2 D FAD T. gracilis bTg 2.2 D LAD Coscinodiscus vulnificus tCv 2.22b D LAD T. insigna tTi 2.5 D LAD T. interfrigidaria tTi 2.5 D LAD Cosmiodiscus insignis tCi 2.1 2.5 D LAD R. heteropolara tRh 2.5 D LAD N. weaveri tNw 2.64 D LAD T. complicata tTc 2.8 D LAD T. barretti tTb 2.8 D LAD T. striata tTs 2.8-3.2 D FAD A. maccullumii bAm 2.8-3.1 D FAD N. kerguelensis bNk 3.1 D FAD A. actinochilus bAa 3 D FAD T. vulnifica bTv 3.2 D FAD N. weaveri bNw 3.2 D LAD T. ritscheri spinosa tTrs 3.2 D FAD T. lentiginosa ovalis bTlo 3.2 D FAD T. insigna bTi 3.2 D LAD N. reinholdii tNr 3.2 D FAD T. barretti bTb 3.25 D FAD N. curta bNc 3.45 D FAD N. ritscherii bNr 3.5 D FAD T. ritscherii bTr 3.5 D LAD N. praeinterfrigidaria tNp 3.5 D LAD N. wisei tNw 3.5 D LAD N. praecurta tNp 3.6 D LAD N. arcula tNa 3.6 D FAD Nitzschia interfrigidaria bNi 3.6b 3.75 D FAD R. alata group bRag 3.8 D LAD N. aurica tNa 3.8 D LAD R. costata tRc 3.9 D LAD T. nitzschioides parva tTnp 3.9 D FAD T. lentiginosa bTl 3.9 D FAD T. kolbei bTk 4 D LAD R. fennerii tRf 4.1 D FAD T. striata bTs 4.1 D FAD R. robusta bRr 4.1 D FAD N. wisei bNw 4.2 D FAD A. parvulus bAp 4.2 D FAD R. diploneides bRd 4.2 D FAD T. fasciculatus bTf 4.2 D FAD Nitzschia barronii bNb 4.0b 4.2 D LAD R. ciesielski tRc 4.2 D FAD N. lacrima bNl 4.3 D FAD Rouxia heteropolara bRh 4.3 D FAD Thalassiosira complicata bTc 4.3 D FAAD Thalassiosira inura bTi 4.5 4.8 D FAD N. praeinterfrigidaria bNp 4.55 D LAD Denticulopsis hustedtii tDh 4.5g D LAD N. miocenica tNm 5.1 D FAD Thalassiosira oestrupii bTo 5.1b 5.2 D LAD N. donahuensis tNd 5.3 D LAD A. ingens var. A tAiA 5.3 D FAD T. inura bTi 5.4 D LAD H. triangularis tHt 5.3 D LAD N. mirabilis tNm 5.3 D LAD A. concavus tAc 5.5 D LAD H. karstenii f. 1 tHk1 5.7 D LAD Asteromphalus kennettii tAk 5.7 7.1 D LAAD Denticulopsis hustedtii tADh 5.6 5.7 D LAD H. ovalis tHo 5.7 D FAD T. ritscheri spinosa bTrs 5.7 D FAD H. triangulus bHt 5.7 D FAD T. oliverana bTo 5.8 D FAD N. reinholdii bNr 5.8 D FAD A. ingens var. A bAiA 5.9 7.9 D LAD L. minisculum tLm 7.2 D FAD H. ovalis bHo 7.3 D LAD D. dimorpha tDd 8 D FAD T. oliverana sparsa bTos 7.8 D FAD H. karstenii f. 1 bHk1 8.1 D FAD Actinocyclus ingens v. ovalis bAio 7.8g 7.9g D FAD Thalassiosira torokina bTt 7.9b 8.2 D FAD Cosmiodiscus intersectus bCi 7.9g D FAD L. minisculum bLm 8.6 D FAD D. hustedtii ovalis bDho 8.8 D FAD N. donahuensis bNd 8.8 D FAD H. karstenii bHk 8.8 D FAD Asteromphalus kennettii bAk 9.6 D LAAD Denticulopsis dimorpha tADd 9.8g 10.1 D LAD Denticulopsis praedimorpha tDp 10.4g 11.2 D LAD A. oligocenica tAo 11.7 D FAD Actinocyclus fryxellae bAf 10.5b 11.7 D FAD Nitzschia praecurta bNp 10.5g D LAAD Denticulopsis praedimorpha tADp 10.8g 10.9g D FAAD Denticulopsis dimorpha bADd 10.9g 11.0g D LAD Nitzschia denticuloides tNd 11.3 11.5g D FAD Denticulopsis dimorpha bDd 11.9 D LAD D. nicobarica tDn 12 D FAD S. barboi bSb 12.5 D LAD Actinocyclus ingens v. nodus tAin 12.3 D FAD Denticulopsis praedimorpha bDp 12.6 D FAD Nitzschia denticuloides bNd 13.4 13.5b D LAD Nitzschia grossepunctata tNg 12.6 13.5g D LAD C. lewisianus tCl 13.2 D FAD Denticulopsis hustedtii bDh 14.2 D LAD Denticulopsis maccollumii tDm 14.2 14.4g D LAD Nitzschia maleinterpretaria tNm 14.1 14.6g D FAD Actinocyclus ingens v. nodus bAin 14.5 14.9g D LAD S. jouseana tSj 14.7 D FAD D. hyalina bDh 15 D FAD D. lauta bDl 16 D LAD R. marylandica tRm 14 D FAD Actinocyclus ingens bAi 15.2g 16.4b D FAD Nitzschia grossepunctata bNg 15.3g 16 D LAD Thalassiosira fraga tTf 18.6 D FAD Denticulopsis maccollumii bDm 17.2 D FAD Crucidenticula nicobarica bCn 17.8 D FAD C. kanayae bCk 18 D LAD C. rhombicus tCr 18.1 D FAD N. mirabilis bNm 18.3 D LAD A. symmetricus tAs 18.6 D LAD T. spumellaroides tTs 19.3 D LAD R. symmetrica tRs 19.7 D FAD Thalassiosira fraga bTf 20.3b 20.8 D LAD A. gombosi tAg 21.5 D FAD R. marylandicus bRm 22 D LAD T. primalabiata tTp 22.3 D LAD H. taurus tHt 22.3 D LAD R. gelida tRg 22.4 D FAD Nitzschia maleinterpretaria bNm ?20.2g D FAD Thalassiosira spumellaroides bTs 21.0b 22.3 D LAD R. schraderi tRs 23.7 D LAD T. groningensis tTg 23.7 D LAD L. ornata tLo 24.5 D LAD R. vigilans (large) tRvl 26.3