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Table T11. Radiolarian datum events, Holes U1340A, U1340B, U1340C, U1340D. (See table note.)

Zone Marker species Age (Ma) Hole U1340A Hole U1340B Hole U1340C Hole U1340D
Core, section Depth (mbsf) Core, section Depth (mbsf) Core, section Depth (mbsf) Core, section Depth (mbsf)
Top Bottom Top Bottom Top Bottom Top Bottom Top Bottom Top Bottom Top Bottom Top Bottom
Botryostrobus aquilonaris T Lychnocanoma nipponica sakaii 0.05 1H-CC 2H-CC 3.9 13.9   1H-CC 0 6.3   1H-CC 0 9.75   1H-CC 0 7.19
T Amphimelissa setosa 0.08–0.10 1H-CC 2H-CC 3.9 13.9 1H-CC 2H-CC 6.4 16.4 2H-CC 3H-CC 19.57 29.08        
T Spongodiscus sp. 0.28–0.32 2H-CC 3H-CC 13.9 23.5 5H-CC 6H-CC 44.1 54.4   1H-CC 0 9.75        
T Axoprunum acquilonium 0.25–0.43 2H-CC 3H-CC 13.9 23.5                        
Stylatractus universus T Stylatractus universus 0.41–0.51 Not found                            
Eucyrtidium matuyamai T Eucyrtidium matuyamai 0.9–1.4 17H-CC 18H-CC 156.2 166.0                        
B Eucyrtidium matuyamai 1.7–1.9 23H-CC 24H-CC 196.1 206.2                        
Cycladophora sakaii T Thecosphaera akitaensis 2.4–2.7 30H-CC 31H-CC 263.1 272.7                        
T Phormostichoartus fistula 2.8–4.4 35H-CC 36H-CC 300.6 318.3                        
Dictyophimus bullatus T Dictyophimus bullatus 3.8–4.0 58H-CC 59H-CC 495.9 515.2                        
B Thecosphaera akitaensis 3.8–4.0 71H-CC   604.6                          

Note: T = top, B = bottom.

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