Fossils of Acodus have been found in Argentina, Canada (Ontario, Quebec, British Columbia, Northwest Territories, Nunavut), China, Colombia (Tarqui, Huila),[6] the Czech Republic, Estonia, Iran, Kazakhstan, Malaysia, the Russian Federation, Spain, Sweden, Thailand, the United Kingdom, and the United States (Indiana, New York, Tennessee, Nevada, Kentucky, Missouri, Ohio, Utah).[5]
^New conodont species and biostratigraphy of the Santa Rosita Formation (upper Furongian–Tremadocian) in the Tilcara Range, Cordillera Oriental of Jujuy, Argentina. Fernando J. Zeballo and Guillermo L. Albanesi (2013), Geological Journal, 48 (2–3): 170–193, doi:10.1002/gj.2425
^New conodont taxa and biozones from the Lower Ordovician of the Cordillera Oriental, NW Argentina. Gustavo G. Voldman, Guillermo L. Albanesi, Gladys Ortega, María Eugenia Giuliano and Carlos Ruben Monaldi (2016), Geological Journal, in press, doi:10.1002/gj.2766