Caimito Formation

The Caimito Formation (Tcm)^[1] is a geologic formation in Panama. The marls, sandstones and conglomerates preserve bivalve and gastropod fossils dating back to the Late Oligocene to Early Miocene period.^[2] The name Caimito was proposed by MacDonald in 1913, named after the Caimito junction in the Panama Railroad during the construction of the Panama Canal.^[3]

Caimito Formation
Stratigraphic range: Late Oligocene-Early Miocene
Type	Formation
Underlies	Alajuela & Gatún Formations
Overlies	Bohío, Caraba & Gatuncillo Formations, Cretaceous basement
Lithology
Primary	Marl
Other	Siltstone, sandstone, conglomerate
Location
Coordinates	9.2°N 79.8°W / 9.2; -79.8
Approximate paleocoordinates	7.7°N 77.5°W / 7.7; -77.5
Region	Panamá Province
Country	Panama
Extent	Panama Basin
Type section
Named for	Caimito Junction of Panama Railroad
Named by	MacDonald
Year defined	1913
Caimito Formation (Panama)

See also

• List of fossiliferous stratigraphic units in Panama