Table T6. Stratigraphic occurrence of the Pliocene key species belonging to the genus Thalassiosira, Hole 1151A.
Core, section
Depth (mbsf)
Thalassiosira baldaufii
T. frenguelliopsis subgroup
T. bipora subgroup
T. oestrupii subgroup
Thalassiosira trifulta group
Others
Thalassiosira cf. frenguelliopsis
Thalassiosira frenguelliopsis
Thalassiosira cf. tetraoestrupii
Thalassiosira tetraoestrupii
Thalassiosira bipora f. prima
Thalassiosira cf. bipora
Thalassiosira bipora
Thalassiosira depressa
Thalassiosira exceptiuncula
Thalassiosira praeoestrupii
186-1151A-                            
50R-CC 541.94 5           2 1     1(L1) 4 496.5
51R-CC 554.63 7       1     3     3 7 493
52R-CC 563.99 22             7(L1)     2(L1) 9 491.5
53R-CC 573.28         1     1 1   1 4 496
54R-CC 582.76 9   (S1)   4(L1)     15(L1, S2)   (S1) 2(L2, S3) 21 479
55R-CC 584.38 24     1(L1) 1     4 1   6(L3) 13 487
56R-CC 596.47 5             7(L2)     3(L2) 10 490
57R-CC 609.84     14(L1, S1) (S1) 1 1(L1, S3) 4(L1) 2(L1)     9(L1, S1) 31 469
58R-CC 622.95 7 7(L1) 1(L1)     1           9 491
59R-CC 631.34 12                     0 500
60R-CC 640.76 27   2(L1, S5)     1(L1)   3       6 494

Note: The number of photographed specimens used for the observation of features are shown in parentheses (L = light microscope, S = scanning electron microscope).