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Table T5. Radiolarian datums, Site U1409.

Core, section Age Zone/
Subzone
Marker species Age
(Ma)
Depth (mbsf)
Top Bottom Top Bottom Midpoint ±
342-U1409A- 342-U1409A-                
    Eocene
  12H-CC   RP11 B Dictyoprora mongolfieri 47.98   105.96 105.96  
13H-CC 14H-CC   RP09 B Theocorys plesioanaclasta 50.50 115.46 124.91 120.19 4.72
14H-CC 15H-CC     T Buryella tetradica 50.87 124.91 126.09 125.50 0.59
17X-CC 20X-CC   RP08 B Buryella clinata 53.35 131.33 160.59 145.96 14.63
    Paleocene
20X-CC 21X-CC   RP07 X Bekoma campechensisBekoma bidartensis 58.23 160.59 162.71 161.65 1.06
21X-CC     RP06c T Buryella pentadica 59.71 162.71   162.71  

B= base, T = top, X = faunal crossover.

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