Alvarez, M. J.; Del Río, C. J.; Martínez, S. (2019). Revision of the subfamily Pitarinae Stewart, 1930 (EucallistaDall, 1902;AustrocallistaErdmann & Morra, 1985;Proteopitargen. nov.) from Cenozoic southern South America: systematic and phylogenetic analyses. Journal of Systematic Palaeontology. 18(5): 433-460 [2020].
Revision of the subfamily Pitarinae Stewart, 1930 (<i>Eucallista</i>Dall, 1902;<i>Austrocallista</i>Erdmann & Morra, 1985;<i>Proteopitar</i>gen. nov.) from Cenozoic southern South America: systematic and phylogenetic analyses