Type
Zone
Age range
96.24–96.08 Ma

International Timescale

Late Cretaceous
Cenomanian

Ammonite Zonation - Western Interior

Acanthoceras muldoonense
Acanthoceras granerosense
Conlinoceras tarrantense - Conlinoceras gilberti
96.2496.2396.2296.2196.2096.1996.1896.1796.1696.1596.1496.1396.1296.1196.1096.0996.08

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