Type
Zone
Age range
94.39–94.27 Ma

International Timescale

Late Cretaceous
Cenomanian

Ammonite Zonation - Western Interior

Neocardioceras juddii
Burroceras clydense
Sciponoceras gracile (Euomphaloceras septemseriatum)
94.3994.3994.3994.3894.3894.3794.3694.3694.3694.3594.3494.3494.3394.3394.3394.3294.3194.3194.3194.3094.3094.2994.2894.2894.2894.2794.27

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