Type
Zone
Age range
85.23–84.52 Ma

International Timescale

Late Cretaceous
Santonian

Ammonite Zonation - Western Interior

Desmoscaphites bassleri
Desmoscaphites erdmanni
Clioscaphites choteauensis
85.385.285.285.185.085.085.084.984.884.884.884.784.784.684.584.5

Macrostrat

Data

Platform

Links

Actions

View on map View in Sift