The Chocal Formation is a geologic formation in Guatemala. The limestone formation preserves fossils dating back to the Permian period.Chocal Formation at Fossilworks.org
See also List of fossiliferous stratigraphic units in Guatemala
References
Further reading C. L. Rowett and J. L. Walper. 1972. Permian corals from near Huehuetenango, Guatemala. Pacific Geology 5:71-80