Tonosí Formation

Tonosí Formation
Stratigraphic range: Priabonian (Chadronian) ~38–34 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Formation
Lithology
Primary	Sandstone
Location
Coordinates	7°24′N 80°24′W / 7.4°N 80.4°W / 7.4; -80.4
Approximate paleocoordinates	0°48′N 104°12′W / 0.8°N 104.2°W / 0.8; -104.2
Region	Los Santos Province
Country	Panama
Type section
Named for	Tonosí
Tonosí Formation (Panama)

The Tonosí Formation is a geologic formation in Panama. It preserves fossils dating back to the Paleogene period (Priabonian).^[1]

Among others, the formation has provided fossils of:

• Harrisianella sp.^[2]

• List of fossiliferous stratigraphic units in Panama

• Woodring, W.P (1973), Geology and Paleontology of Canal Zone and Adjoining Parts of Panama - 306E Description of Tertiary Mollusks (Additions to gastropods, scaphopods, pelecypods: Nuculidae to Malleidae) (PDF), USGS, pp. 1–128, retrieved 2019-02-09

• A. K. Miller and W. M. Furnish. 1939. Aturias from the Eocene of Panama. Journal of Paleontology 13(1):77-79