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D. hyalina - D. praehyalina
1682
Type
Subzone
Age range
14.4–13.8
Ma
International Timescale
Miocene
Serravallian
Langhian
Neogene North Pacific Diatom Biochronology Subzones
Denticulopsis simonsenii
D. hyalina - D. praehyalina
Denticulopsis lauta
14.40
14.35
14.30
14.25
14.20
14.15
14.10
14.05
14.00
13.95
13.90
13.85
13.80
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