Guasasa Formation

Guasasa Formation
Stratigraphic range: Late Jurassic–Early Cretaceous (Tithonian–early Valanginian), ~151–141 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Sub-units	San Vicente, El Americano, Tumbadero & Tumbitas Members
Overlies	Jagua Formation
Lithology
Primary	Limestone
Other	Shale, dolomite, chert
Location
Coordinates	22°42′N 83°48′W / 22.7°N 83.8°W / 22.7; -83.8
Approximate paleocoordinates	5°54′N 53°00′W / 5.9°N 53.0°W / 5.9; -53.0
Region	Pinar del Río Province
Country	Cuba
Extent	Sierra de los Órganos
Type section
Named for	Guasasa
Guasasa Formation (Cuba)

The Guasasa Formation is a geologic formation in Cuba dating to the Late Jurassic to Early Cretaceous (Tithonian to early Valanginian ages). It is primarily composed of limestone. Fossils from the formation include ammonites and a partially articulated skeleton of an unnamed possible ophthalmosaurid.

See also

• List of fossiliferous stratigraphic units in Cuba

References

Further reading

• Bermúdez, Pedro J (1961), "Las formaciones geológicas de Cuba" (PDF), Geología Cubana, 1: 1–180, retrieved 2019-02-06
• R. Myczynski (1989). "Ammonite biostratigraphy of the Tithonian of Western Cuba" (PDF). Annales Societatis Geologorum Poloniae. 59: 43–125. ISSN 0208-9068.