L. F. M. Iniesta, R. S. Bouzan, and A. D. Brescovit, “A reassessment of the Neotropical genus Pseudonannolene Silvestri, 1895: cladistic analysis, biogeography, and taxonomic review (Spirostreptida: Pseudonannolenidae)”, EJT, vol. 867, no. 1, pp. 1–312, Apr. 2023.