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Didymocyrtis antepenultima
1637
Type
Zone
Age range
8.77–7.7
Ma
International Timescale
Miocene
Tortonian
Low Latitude Radiolarian Zonation
Didymocyrtis penultima
Didymocyrtis antepenultima
Diartus petterssoni
8.8
8.8
8.7
8.7
8.6
8.6
8.5
8.4
8.4
8.3
8.3
8.3
8.2
8.2
8.1
8.1
8.0
8.0
7.9
7.8
7.8
7.8
7.7
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