-51.616665, -20.75: 10 Treatments

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Bunocephalus larai     Esguícero, André L. H., Castro, Ricardo M. C. & Pereira, Thiago N. A., 2020, Bunocephalus hertzi, a new banjo catfish from the upper Rio Paraná basin, Brazil (Siluriformes: Aspredinidae), with the redescription of Bunocephalus larai Ihering 1930, Zootaxa 4742 (1), pp. 105-116 : 106-109 106-109
Brycon orbignyanus     Lima, Flávio C. T., 2017, A revision of the cis-andean species of the genus Brycon Müller & Troschel (Characiformes: Characidae), Zootaxa 4222 (1), pp. 1-189 : 90-98 90-98
Cetopsis gobioides     Vari, Richard P., Ferraris Jr, Carl J. & de Pinna, Mário C. C., 2005, The Neotropical whale catfishes (Siluriformes: Cetopsidae: Cetopsinae), a revisionary study, Neotropical Ichthyology 3 (2), pp. 127-238 : 168-171 168-171
Potamotrygon amandae   sp. nov.  Loboda, Thiago Silva & Carvalho, Marcelo Rodrigues de, 2013, Systematic revision of the Potamotrygon motoro (Müller & Henle, 1841) species complex in the Paraná-Paraguay basin, with description of two new ocellated species (Chondrichthyes: Myliobatiformes: Potamotrygonidae), Neotropical Ichthyology 11 (4), pp. 693-737 : 723-735 723-735
Potamotrygon amandae     Lima, Arthur De, Loboda, Thiago Silva, Gianeti, Michel Donato, Silva, João Paulo Capretz Batista Da & Pinna, Mario De, 2023, Type specimens of Elasmobranchii in the Museu de Zoologia da Universidade de São Paulo (MZUSP), Zootaxa 5296 (3), pp. 301-332 : 313-314 313-314
Potamotrygon falkneri     da Silva, João Paulo C. B. & de Carvalho, Marcelo R., 2011, A taxonomic and morphological redescription of Potamotrygon falkneri Castex & Maciel, 1963 (Chondrichthyes: Myliobatiformes: Potamotrygonidae), Neotropical Ichthyology 9 (1), pp. 209-232 : 211-222 211-222
Iheringichthys syi   sp. nov.  Azpelicueta, María de las Mercedes & Britski, Heraldo A., 2012, Iheringichthys syi (Siluriformes: Pimelodidae), a new pimelodid species from upper Paraná basin, Brazil, Neotropical Ichthyology 10 (1), pp. 45-52 : 46-50 46-50
Mecynogea erythromela     Martins, Pedro H. & Santos, Adalberto J., 2018, Morphology and taxonomy of the orb-weaving spider genus Mecynogea, and a peculiar species of Argiope (Araneae, Araneidae), Zootaxa 4415 (3), pp. 423-451 : 439 439
Ariadna boliviana     Giroti, André Marsola & Brescovit, Antonio Domingos, 2018, The taxonomy of the American Ariadna Audouin (Araneae: Synspermiata: Segestriidae), Zootaxa 4400 (1), pp. 1-114 : 59-62 59-62
Idiops sertania   sp. nov.  Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori & Brescovit, Antonio Domingos, 2021, Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species, European Journal of Taxonomy 780 (1), pp. 1-71 : 60-63 60-63