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Neogastroplites muelleri
907
Type
Zone
Age range
99.17–98.75
Ma
International Timescale
Late Cretaceous
Cenomanian
Ammonite Zonation - Western Interior
Neogastroplites americanus
Neogastroplites muelleri
Neogastroplites cornutus
99.18
99.16
99.14
99.12
99.10
99.08
99.06
99.04
99.02
99.00
98.98
98.96
98.94
98.92
98.90
98.88
98.86
98.84
98.82
98.80
98.78
98.76
98.74
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