Subcommission on Cretaceous Stratigraphy

Overall objectives of the Subcommission on Cretaceous Stratigraphy (SCS) and fit within IUGS science policy are:

  • to establish a standard global stratigraphic subdivision and nomenclature for the Cretaceous, as part of the ICS standard global stratigraphic scale;
  • to produce a stratigraphic table displaying agreed subdivision to stage and substage level marking boundaries that are defined by a GSSP.

Cretaceous official timescale

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