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Macrostrat
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Perisphinctes pumilus
835
Type
Zone
Age range
160.1–159.7
Ma
International Timescale
Late Jurassic
Oxfordian
Ammonite Zonation - Boreal
Perisphinctes cautisnigrae
Perisphinctes pumilus
Perisphinctes plicatilis
160.10
160.08
160.06
160.04
160.02
160.00
159.98
159.96
159.94
159.92
159.90
159.88
159.86
159.84
159.82
159.80
159.78
159.76
159.74
159.72
159.70
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