1. Conulariids (Phylum Conulariida) from the Devonian of Bolivia;Babcock,1987
2. Biogeography of Devonian Bryozoa;Bigey,1985
3. Los fósiles guías de Bolivia, I. Paleozoico;Branisa;Servicio Geológico de Bolivia, Boletín,1965
4. Nova ocorrência de Metacryphaeus cf. australis (Trilobita) no Devoniano Médio da Bacia do Parnaíba;Caldas,1987
5. Lower-Early Middle Devonian trilobites from Mato Grosso, Brazil, and related species from Paraná;Carvalho M. da;American Museum Novitates,1991