-56.024723, -5.262778: 10 Treatments

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Xenurobrycon varii   sp. nov.  Mendonça, Marina Barreira, Peixoto, Luiz Antônio Wanderley, Dutra, Guilherme Moreira & Netto-Ferreira, André Luiz, 2016, A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil, Neotropical Ichthyology (e 150057) 14 (1), pp. 1-8 : 2-7 2-7
Ammoglanis nheengatu   sp. nov.  Canto, André L. Colares, Hercos, Alexandre P. & Ribeiro, Frank Raynner V., 2022, Description of a new species of miniature catfish of the genus Ammoglanis (Siluriformes: Trichomycteridae) from rio Tapajós basin, Brazil, Neotropical Ichthyology (e 210122) 20 (2), pp. 1-13 : 3-9 3-9
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
Archolaemus luciae   sp. nov.  Vari, Richard P., Santana, Carlos David De & Wosiacki, Wolmar B., 2012, South American electric knifefishes of the genus Archolaemus (Ostariophysi, Gymnotiformes): undetected diversity in a clade of rheophiles, Zoological Journal of the Linnean Society 165 (3), pp. 670-699 : 689-692 689-692
Microglanis maculatus   sp. nov.  Shibatta, Oscar Akio, 2014, A new species of Microglanis (Siluriformes: Pseudopimelodidae) from the upper rio Tocantins basin, Goiás State, Central Brazil, Neotropical Ichthyology 12 (1), pp. 81-87 : 82-86 82-86
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
Phenacorhamdia nigrolineata     Castro, Íthalo da Silva & Wosiacki, Wolmar Benjamin, 2023, Redescription and expansion of the geographic distribution of Phenacorhamdia nigrolineata (Siluriformes: Heptapteridae), Neotropical Ichthyology (e 220107) 21 (2), pp. 1-19 : 4-14 4-14
Allobates nunciatus   sp. nov.  Moraes, Leandro João Carneiro De Lima, Pavan, Dante & Lima, Albertina Pimentel, 2019, A new nurse frog of Allobates masniger - nidicola complex (Anura, Aromobatidae) from the east bank of Tapajós River, eastern Amazonia, Zootaxa 4648 (3), pp. 401-434 : 404-421 404-421
Poxyaibamberus jamanximensis   sp. nov.  Andersen, Trond, Dantas, Galileu P. S., Baranov, Viktor, Sanz-laParra, Annui M., Mendes, Humberto F. & Hamada, Neusa, 2024, Poxyaibamberus Andersen & Dantas, gen. nov. (Diptera, Chironomidae, Orthocladiinae) from Brazil, ZooKeys 1205, pp. 1-15 : 1-15 1-15
Epipleoneura williamsoni     Pessacq, P. & Costa, J. M., 2010, Epipleoneura angeloi (Odonata: Protoneuridae), a new species from the central region of Brazil, Zootaxa 2721, pp. 55-61 : 59 59