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Rouxia californica
1674
Type
Subzone
Age range
7.67–6.57
Ma
International Timescale
Miocene
Messinian
Tortonian
Neogene North Pacific Diatom Biochronology Subzones
N. kamtschatica - Nitz. rolandii
Rouxia californica
Thalassionema schraderi
7.7
7.7
7.6
7.5
7.5
7.5
7.4
7.3
7.3
7.3
7.2
7.2
7.1
7.0
7.0
7.0
6.9
6.8
6.8
6.8
6.7
6.7
6.6
6.5
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