-51.816666, -27.516666: 10 Treatments

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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
Atheriniformes   new species  Wingert, Juliana M., Ferrer, Juliano & Malabarba, Luiz R., 2017, Review of the Odontesthes perugiae species group from Río de La Plata drainage, with the description of a new species (Atherinomorpha: Atherinopsidae), Zootaxa 4250 (6), pp. 501-528: 514-524 514-524
Siluriformes     Bertaco, Vinicius A. & Azevedo, Marco A., 2018, Type catalog from the fish collection of the Museu de Ciências Naturais, Fundação Zoobotânica do Rio Grande do Sul, Brazil, Zootaxa 4392 (1), pp. 83-100: 90 90
Araneae     Prado, André Wanderley Do, Baptista, Renner Luiz Cerqueira & Machado, Miguel, 2018, Taxonomic review of Epicadinus Simon, 1895 (Araneae: Thomisidae), Zootaxa 4459 (2), pp. 201-234: 223-229 223-229
Araneae     Santos, Adalberto J., 2017, The jumping lynx spider Oxyopes salticus Hentz, 1845 and its Neotropical relatives (Araneae: Oxyopidae), Zootaxa 4216 (5), pp. 457-481: 459-465 459-465
Hisonotus aky   new combination  Carvalho, Tiago P. & Reis, Roberto E., 2009, Four new species of Hisonotus (Siluriformes: Loricariidae) from the upper rio Uruguay, southeastern South America, with a review of the genus in the rio Uruguay basin, Zootaxa 2113 (1), pp. 1-40: 26-28 26-28
Siluriformes     Bertaco, Vinicius A. & Azevedo, Marco A., 2018, Type catalog from the fish collection of the Museu de Ciências Naturais, Fundação Zoobotânica do Rio Grande do Sul, Brazil, Zootaxa 4392 (1), pp. 83-100: 93 93
Hisonotus leucophrys   new species  Carvalho, Tiago P. & Reis, Roberto E., 2009, Four new species of Hisonotus (Siluriformes: Loricariidae) from the upper rio Uruguay, southeastern South America, with a review of the genus in the rio Uruguay basin, Zootaxa 2113 (1), pp. 1-40: 12-18 12-18
Hoplias australis   new species  Oyakawa, Osvaldo T. & Mattox, George M. T., 2009, Revision of the Neotropical trahiras of the Hoplias lacerdae species-group (Ostariophysi: Characiformes: Erythrinidae) with descriptions of two new species, Neotropical Ichthyology 7 (2), pp. 117-140: 119-122 119-122
Araneae     Faleiro, Bárbara T. & Santos, Adalberto J., 2019, Revision of the crab-spiders of the genus Runcinioides Mello-Leitão, 1929 (Araneae, Thomisidae), Zootaxa 4567 (1), pp. 25-46: 29-33 29-33