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