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N. kamtschatica - Nitz. rolandii
1673
Type
Subzone
Age range
6.57–5.56
Ma
International Timescale
Miocene
Messinian
Neogene North Pacific Diatom Biochronology Subzones
Thalassiosira oestrupii
N. kamtschatica - Nitz. rolandii
Rouxia californica
6.6
6.5
6.5
6.5
6.4
6.3
6.3
6.3
6.2
6.2
6.1
6.0
6.0
6.0
5.9
5.8
5.8
5.8
5.7
5.7
5.6
5.5
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