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Denticulopsis simonsenii
1681
Type
Subzone
Age range
13.8–13.1
Ma
International Timescale
Miocene
Serravallian
Langhian
Neogene North Pacific Diatom Biochronology Subzones
Crucidenticula nicobarica
Denticulopsis simonsenii
D. hyalina - D. praehyalina
13.8
13.8
13.7
13.7
13.6
13.6
13.5
13.4
13.4
13.3
13.3
13.3
13.2
13.2
13.1
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