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Amphirhopalum ypsilon
1630
Type
Zone
Age range
1.12–0.61
Ma
International Timescale
Pleistocene
Chibanian
Calabrian
Low Latitude Radiolarian Zonation
Stylatractus universus
Amphirhopalum ypsilon
Anthocyrtidium angulare
1.14
1.12
1.10
1.08
1.06
1.04
1.02
1.00
0.98
0.96
0.94
0.92
0.90
0.88
0.86
0.84
0.82
0.80
0.78
0.76
0.74
0.72
0.70
0.68
0.66
0.64
0.62
0.60
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