The Anzaldo Formation is a Katian geologic formation of central Bolivia. The formation belongs to the Cochabamba Group, overlies the Capinota Formation and is overlain by the San Benito Formation.

The formation has provided the following fossils:

Pteraspidomorphi

• Huemacaspis bistrami
• Sacabambaspis janvieri

• Leiostegina inexpectans

• Gyrospira tourteloti

• Bistramia elegans
• Dignomia munsterii

• Pradel, A.; Sansom, I. J.; Gagnier, P.-Y.; Cespedes, R.; Janvier, P. (2007), "The tail of the Ordovician fish Scabambaspis", Biology Letters, 3 (1): 72–75, doi:10.1098/rsbl.2006.0557, PMC 2373808, PMID 17443969
• Emig, C. C.; Herrera, Z. (2006), "Dignomia munsterii (Brachiopoda, Lingulata) from the Ordovician of Bolivia, with redescription of the genus", Geodiversitas, 28: 227–237
• Gagnier, P. Y.; Blieck, A.; Emig, C. C.; Sempere, T.; Vachard, D.; Vanguestaine, M. (1996), "New paleontological and geological data on the Ordovician and Silurian of Bolivia", Journal of South American Earth Sciences, 9 (5): 329–347, Bibcode:1996JSAES...9..329G, doi:10.1016/S0895-9811(96)00018-1
• Branisa, L (1965), "Los fósiles guias de Bolivia: I. Paleozoico", Boletín de Servicio Geologico de Bolivia la Paz, Bolivia, 6: 1–282