Stromatolites from Bolivia.
These stromatolites are from Bolivia, South America.
They occur in the Miraflores Formation, El Molino, Cerro Huañaquino, Potosí, Bolivia. The formation consists of fine-grained sandstone and sandy limestones with the stromatolites growing in what is believed to have been ancient lake systems.
Age is Late Cretaceous (approximately 70 million years)
