The Las Sierras Formation is a geologic formation in Nicaragua. It preserves fossils dating back to the Pleistocene period.Las Sierras Formation at Fossilworks.org
Fossil content Procyonidae indet. Proboscidea indet.
See also List of fossiliferous stratigraphic units in Nicaragua
References
Further reading S. G. Lucas, R. Garcia, E. Espinoza, G. E. Alvarado, L. H de Mendoza and E. Vega. 2008. The fossil mammals of Nicaragua. New Mexico Museum of Natural History and Science Bulletin 44:417-429