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Didymocyrtis penultima
1636
Type
Zone
Age range
7.7–6.71
Ma
International Timescale
Miocene
Messinian
Tortonian
Low Latitude Radiolarian Zonation
Stichocorys peregrina
Didymocyrtis penultima
Didymocyrtis antepenultima
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
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