Type
Zone
Age range
94.15–93.98 Ma

International Timescale

Late Cretaceous
Cenomanian

Ammonite Zonation - Western Interior

Watinoceras devonense
Nigericeras scotti
Neocardioceras juddii
94.1594.1494.1394.1294.1194.1094.0994.0894.0794.0694.0594.0494.0394.0294.0194.0093.9993.98

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