Table 5. Stratigraphic distribution of radiolarians at Hole 1087A.
Core, section, interval
Depth (mbsf)
Abundance Preservation Cycladophora davisiana Didymocyrtis tetrathalamus Pterocanium trilobum Axoprunum angelinum Lamprocyclas hannai Pterocanium praetextum eucolpum Spongurus pylomaticus Theocorythium trachelium Eucyrtidium calvertense Lamprocyrtis neoheteroporos Lamprocyrtis heteroporos Amphirhopalum ypsilon Eucyrtidium teuscheri Didymocyrtis avita Eucyrtidium acuminatum Cycladophora cornutoides Cycladophora sakaii Cycladophora pliocenica
175-1087A-
1H-CC 8.21
C
M
P
P
+















2H-CC 18.17
R
M


















3H-CC 27.75
A
M
P
P

P
P
+
+
P










4H-CC 36.71
A
M
P
P

P
P



+
P








5H-CC 46.55
A
M
P
P

+




P

+







6H-CC 56.12
A
M
P
P


+



P









7H-CC 65.71
A
M
P
P
P

P

+
P
P
+

+
+





8H-CC 74.34
A
M
P
P
+

P



P


P

P




9H-CC 84.56
A
M
P
P

P
P
+


P

P
+


+



10H-CC 93.61
A
M

P
+
P
+


P
P
+
P
P
+
P
P
P
+

11H-CC 103.42
A
M

+

P
+



P
+
P







12H-CC 112.97
A
M

P

P
P



P
+
P

+
P



+
13H-CC 122.85
A
M




P



+









14H-CC 131.80
R
P


















15H-CC 141.72
F
M


















16H-CC 150.83
R
M


















17H-CC 159.54
B



















18H-CC 168.44
B



















19H-CC 179.81
B



















20H-CC 188.61
B



















21H-CC 198.67
B



















22H-CC 206.71
B



















23H-CC 213.47
B



















24H-CC 227.18
B



















25H-CC 236.17
B



















26H-CC 242.12
B



















Notes: Occurrence is indicated by P = present and + = one specimen per slide. Abundance: C = common; R = rare; A = abundant; F = few; and B = barren. Preservation: M = moderate and P = poor.