Biostratigraphic charts for many eras.

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PDI Neogene Biostrat Chart of the Gulf Basin US
Updated February 2017 (pdf/graphic version)

PDI Paleogene Biostrat Chart of the Gulf Basin US
Updated March 2017 (pdf/graphic version)

PDI Mesozoic Biostrat Chart of the Gulf Basin US
Updated May 2019 (pdf/graphic version)

PDI Complete Biostrat Chart of the Gulf Basin US
Includes Neogene, Paleogene and Mesozoic - Updated January 2018
(xlsx version)

Paleobathymetric Zonation for Gulf Of Mexico Benthic Foraminifera

PDI Biostrat Chart Bibliography

Bioevent Ages in the Gulf of Mexico - Paleo Data Inc.