The San Fernando Formation is a geologic formation in Trinidad and Tobago. The open marine claystones preserve fossils dating back to the Oligocene period.
See also
List of fossiliferous stratigraphic units in Trinidad and Tobago
References
Further reading
R. M. Stainforth. 1948. Description, correlation, and paleoecology of Tertiary Cipero Marl, Trinidad, BWI. Bulletin of the American Association of Petroleum Geologists 32(7):1292-1330