precision stratigraphy associates
PRECISION STRATIGRAPHY ASSOCIATES

CRETCSDB 4.2 Appendix 1 Update

This update to the list of numerical ages of species and marker events revises ages of Albian ammonites of the US Gulf Coast and of Aptian-Albian geochemical stages. View Update Now. View all files for Cretaceous Chronostratigraphic Database.  
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