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Table T4. Distribution of calcareous nannofossils, Hole U1308C.

Core, section
Age (Ma)
Reworked species
Abundance Preservation Calcidiscus leptoporus Calcidiscus macintyrei Ceratolithus cristatus Coccolithus streckerii Coccolithus pelagicus Cyclolithella annula Discoaster asymmetricus Discoaster brouweri Discoaster pentaradiatus Discoaster surculus Discoaster tamalis Discoaster triradiatus Discoaster variabilis Discoaster spp. Discolithina japonica Discolithina spp. Emiliania huxleyi Gephyrocapsa caribbeanica Gephyrocapsa oceanica Gephyrocapsa parallela Gephyrocapsa spp. (large) Gephyrocapsa spp. (small) Helicosphaera carteri Helicosphaera hyalina Helicosphaera neogranulata Helicosphaera sellii Helicosphaera wallichii Pseudoemiliania lacunosa Reticulofenestra asanoi Reticulofenestra ampla Reticulofenestra pseudoumbilicus Reticulofenestra spp. (small) Rhabdosphaera clavigera Rhabdosphaera stylifera Scapholithus fossilis Sphenolithus abies Syracosphaera pulchra Umbilicosphaera sibogae Calcidiscus formosus Arkangelskiella cymbiformis Cribrosphaerella ehrenbergii Prediscosphaera cretacea Zeugrhabdotus sp. Watznaueria barnesae
303-U1308C-
1H-CC 0~0.25 C M R

+ R










C
F R
C R +





r +
+

R + r r r r r r
2H-CC 0.25~0.41 A G R

+ R









+
R F +
A R +






+ + +

R





r
3H-CC 0.41~0.85 A G R

+ R











+ F +
A R



R


+ +


R

r r r

4H-CC 0.41~0.85 A G R


R








+ R
+ + +
A R



R



+ +

R +





5H-CC 0.41~0.85 C M R


+








+ +

R R
C R



F







R +





6H-CC 0.85~0.95 A M F


R








+ R

R R
F R



F F

C R +

R +





7H-CC 0.95~1.16 A M F













R




C R



F F

C R +

R +





8H-CC 0.95~1.16 A M R












+ R




R R



F R

C + +

+ +





9H-CC 1.27~1.45 A M R


R








+ R
F F
F C R

R
F


F + +

+ +





10H-CC 1.45~1.65 A M F


R









R
F C

C R

R
F


F + +

R






11H-CC 1.45~1.65 A M R

+ F









R
F F

C R

R + F


F



+






12H-CC 1.65~1.73 A M F R

R +








R
R


F R

R + R


C + +

+ +





13H-CC 1.73~1.97 A M F F
+ F +


r




R




R R

R
F


C +


R +





14H-CC 1.73~1.97 A M F F
+ F +







+ R




R R

R + F


C +
+
R +





15H-CC 1.97~2.38 A M R R
+ R

+


+

+ R




R R

R
F


A + +

R +





16H-CC 1.97~2.38 A M R R
+ F

+


+

+ R





R

R
R


A + +

R






17H-CC 1.97~2.38 A M R R
+ F
+ +





+ R





R

F
F


A + +

R






18H-CC 1.97~2.38 A M R R
+ F

+





+ R





R

F
F


A + +

R +





19H-CC 2.54~2.74 A M R R
+ F
+ + + +




R





R

F
R


A + +

R






20H-CC 2.54~2.74 A M R R
+ C
+ + + +
+


R





+

F
R


A + +

R






21H-CC 2.78~3.85 A M R R
+ R + + + + + +


+ R





R

R
R
F
A + +

R






22H-CC 2.78~3.85 A M R R
+ R +
+ + + +


+ R





+

R
+
R
A + +

R






23H-CC 2.78~3.85 A M R R
+ R +
+ + +




+





+

R
R
+
A +


R






24H-CC 2.78~3.85 A M R R
+ C + + + + + +

R
R




+ R

R + +


C + + +
R +





25H-CC 2.78~3.85 A M R F
R C + + + + + +

R
R





R

R
R


C +
+
R






26H-CC 2.78~3.85 A M R F
R C + + +
+ +

R + +





R

+ + R
+
C



+






27H-CC 2.78~3.85 A M R R
R F + + +

+

+
+




+ R
+ +
R


A +


+






28H-CC 3.85~4.50 A M R R
+ C +
+




+
+




+ R
+ + + +

R A + +
+ R +





29H-CC 3.85~4.50 A M R R
+ C +
+ + +

+ R
+





R
+ +



F A


R +






30H-CC 3.85~4.50 A M R R + + C +
+ +



R







R
R +



F C


R +






Notes: Abundance: A = abundant, C = common, F = few, R = rare, + = present, r = reworked. Preservation: G = good, M = moderate.

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