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Thalassiosira yabei
1678
Type
Subzone
Age range
11.5–9.7
Ma
International Timescale
Miocene
Tortonian
Neogene North Pacific Diatom Biochronology Subzones
Denticulopsis dimorpha
Thalassiosira yabei
Denticulopsis praedimorpha
11.5
11.4
11.3
11.2
11.1
11.0
10.9
10.8
10.7
10.6
10.5
10.4
10.3
10.2
10.1
10.0
9.9
9.8
9.7
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