-57.116665, -5.5833335: 10 Treatments

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Marmosops (Sciophanes) marina   sp. nov.  Ferreira, Claudilívia, Oliveira, Ana Cristina Mendes De, Lima-Silva, Luan Gabriel & Rossi, Rogério Vieira, 2020, Taxonomic review of the slender mouse opossums of the “ Parvidens ” group from Brazil (Didelphimorphia: Didelphidae: Marmosops), with description of a new species, Zootaxa 4890 (2), pp. 201-233 : 208-221 208-221
Monodelphis (Mygalodelphys) saci   sp. nov.  Pavan, Silvia E., Mendes-Oliveira, Ana C. & Voss, Robert S., 2017, A New Species of Monodelphis (Didelphimorphia: Didelphidae) from the Brazilian Amazon, American Museum Novitates 2017 (3872), pp. 1-20 : 5-17 5-17
Imparfinis munduruku   sp. nov.  Castro, Íthalo Da Silva & Wosiacki, Wolmar Benjamin, 2019, Anew species of Imparfinis Eigenmann & Norris, 1900 (Siluriformes: Heptapteridae) from the Tapajós basin, Brazil, Zootaxa 4701 (5), pp. 461-472 : 462-469 462-469
Thayeria tapajonica   sp. nov.  Moreira, Cristiano R. & Lima, Flávio C. T., 2017, Thayeria tapajonica (Characiformes: Characidae), a new species from rio Tapajós basin, Brazil, Zootaxa 4344 (1), pp. 137-146 : 138-143 138-143
Myrmecium quasimodo   sp. nov.  Silva-Junior, Claudio J. & Bonaldo, Alexandre B., 2019, Four new species of Myrmecium Latreille, 1824 and complementary description of M. machetero Candiani & Bonaldo, 2017 (Araneae: Corinnidae: Castianeirinae), Zootaxa 4706 (2), pp. 391-400 : 397-400 397-400
Euryrhynchus amazoniensis     Pachelle, Paulo P. G. & Tavares, Marcos, 2018, The freshwater shrimp family Euryrhynchidae Holthuis, 1950 (Crustacea: Decapoda: Caridea) revisited, with a taxonomic revision of the genus Euryrhynchus Miers, 1878, Zootaxa 4380 (1) : 17-37 17-37
Neacomys vossi   sp. nov.  Semedo, Thiago Borges Fernandes, Silva, Maria Nazareth Ferreira Da, Gutiérrez, Eliécer E., Ferreira, Daniela Cristina, Nunes, Mario Da Silva, Mendes-Oliveira, Ana Cristina, Farias, Izeni Pires & Rossi, Rogério Vieira, 2020, Systematics of Neotropical Spiny Mice, Genus Neacomys Thomas, 1900 (Rodentia: Cricetidae), from Southeastern Amazonia, with Descriptions of Three New Species, American Museum Novitates 2020 (3958), pp. 1-43 : 26-30 26-30
Adenomera inopinata   sp. nov.  Carvalho, Thiago R. D., Moraes, Leandro J. C. L., Lima, Albertina P., Fouquet, Antoine, Peloso, Pedro L. V., Pavan, Dante, Drummond, Leandro O., Rodrigues, Miguel T., Giaretta, Ariovaldo A., Gordo, Marcelo, Neckel-Oliveira, Selvino & Haddad, Célio F. B., 2021, Systematics and historical biogeography of Neotropical foam-nesting frogs of the Adenomera heyeri clade (Leptodactylidae), with the description of six new Amazonian species, Zoological Journal of the Linnean Society 191, pp. 395-433 : 420-422 420-422
Pseudophallus brasiliensis     Dallevo-Gomes, Caio I. A., Mattox, George M. T. & Toledo-Piza, Mônica, 2020, Taxonomic review of the pipefish genus Pseudophallus Herald, with the description of a new species (Syngnathiformes: Syngnathidae), Zootaxa 4859 (1), pp. 81-112 : 86-90 86-90
Tapajos     Carvalho, Thiago R. D., Moraes, Leandro J. C. L., Lima, Albertina P., Fouquet, Antoine, Peloso, Pedro L. V., Pavan, Dante, Drummond, Leandro O., Rodrigues, Miguel T., Giaretta, Ariovaldo A., Gordo, Marcelo, Neckel-Oliveira, Selvino & Haddad, Célio F. B., 2021, Systematics and historical biogeography of Neotropical foam-nesting frogs of the Adenomera heyeri clade (Leptodactylidae), with the description of six new Amazonian species, Zoological Journal of the Linnean Society 191, pp. 395-433 : 422-424 422-424