The Obispo Formation is a Dapingian geologic formation of southern Bolivia. The shales and siltstones were deposited in an open marine environment.San Lucas at Fossilworks.orgMolle Punku, Huerta Maya, and Pantipata at Fossilworks.org
Fossil content The formation has provided the following fossils:
Camerella sp. Ceratiocaris sp. Didymograptus sp. Dinorthis sp. Endoceras sp. Euorthisina sp. Hoekaspis sp. Hypermecaspis sp. Incorthis sp. Megistaspis sp. Niobides sp. Orthis sp. Orthoceras sp. Pachendoceras sp. Thysanopyge sp.
See also List of fossiliferous stratigraphic units in Bolivia
References
Further reading L. Branisa. 1965. Los fosiles guias de Bolivia: I. Paleozoico. Boletin de Servicio Geologico de Bolivia. La Paz, Bolivia 6:1-282 A. Pribyl and J. Vanek. 1980. Ordovician trilobites of Bolivia. Rozpravy Ceskoslovenske Akademie Ved. Rada Matematickych a Prirodnich Ved. Academia Praha, Prague, Czechoslovakia 90(2):1-90