Cappetta, H. (1991)
Late Cretaceous selachian faunas from Bolivia: new data and summary. Revista Tecnica de Yacimientos Petroliferos Fiscales Bolivianos, 12(3–4), 435–440

Gayet, M. & Marshall, L.G. & Skmpere, T. (1991)
The Mesozoic and Paleocene Vertebrates of Bolivia and their Stratigraphic Context: A Review. Revista Tecnica de Yacimientos Petroliferos Fiscales Bolivianos, 12(3–4): 393–433

Gayet, M. & Marshall, L.G. & Sempere, T. (1992)
The Mesozoic and Paleogene vertebrates of Bolivia and their stratigraphic context: a review. In R. Suarez(editor), Fosiles y facies de Bolivia. Revista Tecnica de Yacimientos Petroliferos Fiscales Bolivianos, 12: 393–433