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Denticulopsis praedimorpha
1679
Type
Subzone
Age range
12.7–11.5
Ma
International Timescale
Miocene
Tortonian
Serravallian
Neogene North Pacific Diatom Biochronology Subzones
Thalassiosira yabei
Denticulopsis praedimorpha
Crucidenticula nicobarica
12.8
12.7
12.7
12.6
12.6
12.5
12.4
12.4
12.3
12.3
12.3
12.2
12.2
12.1
12.1
12.0
11.9
11.9
11.8
11.8
11.8
11.7
11.7
11.6
11.6
11.5
11.4
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