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Lychnodictyum audax
1633
Type
Zone
Age range
3.87–2.74
Ma
International Timescale
Pliocene
Piacenzian
Zanclean
Low Latitude Radiolarian Zonation
Pterocanium prismetium
Lychnodictyum audax
Phormostichoartus doliolum
3.9
3.9
3.8
3.8
3.7
3.6
3.6
3.5
3.5
3.5
3.4
3.4
3.3
3.3
3.2
3.1
3.1
3.0
3.0
3.0
2.9
2.9
2.8
2.8
2.7
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