-48.583332, -11.05: 10 Treatments

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Brycon falcatus     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: 142-158 142-158
Tetragonopterus anostomus     Silva, Gabriel S. C., Melo, Bruno F., Oliveira, Claudio & Benine, Ricardo C., 2016, Revision of the South American genus Tetragonopterus Cuvier, 1816 (Teleostei: Characidae) with description of four new species, Zootaxa 4200 (1), pp. 1-46: 27-29 27-29
Tetragonopterus akamai   new species  Araujo, Leonardo B. S. & Lucinda, Paulo H. F., 2014, A new species of the genus Tetragonopterus Cuvier, 1816 (Ostariophysi: Characiformes: Characidae) from the rio Tocantins drainage, Brazil, Neotropical Ichthyology 12 (2), pp. 309-315: 310-314 310-314
Charax niger     Menezes, Naércio A. & de Lucena, Carlos Alberto S., 2014, A taxonomic review of the species of Charax Scopoli, 1777 (Teleostei: Characidae: Characinae) with description of a new species from the rio Negro bearing superficial neuromasts on body scales, Amazon basin, Brazil, Neotropical Ichthyology 12 (2), pp. 193-228: 215-217 215-217
Jupiaba elassonaktis   new species  Thiago N. A. Pereira & Paulo H. F. Lucinda, 2007, A new species of Jupiaba Zanata, 1997 (Ostariophysi, Characiformes, Characidae) from the rio Tocantins drainage, Brazil., Zootaxa 1614, pp. 53-60: 54-57 54-57
Epicratinus perfidus   new combination  Gonçalves, Ricardo Antonio & Brescovit, Antonio Domingos, 2020, Taxonomic review and cladistic analysis of Neotropical spider genus Epicratinus Jocqué & Baert, 2005 (Araneae: Zodariidae) with description of eleven new species, Zootaxa 4886 (1), pp. 1-77: 24-25 24-25
Simpsonichthys multiradiatus     Wilson J. E. M. Costa, 2007, Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae)., Zootaxa 1669, pp. 1-134: 126-128 126-128
Potamotrygon rex   sp. nov.  De Carvalho, Marcelo R., 2016, Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855), Zootaxa 4150 (5), pp. 537-565: 538-552 538-552
Centromochlus akwe   new species  Coelho, Fernanda L., Chamon, Carine C. & Sarmento-Soares, Luisa M., 2021, A new species of driftwood catfish Centromochlus Kner, 1858 (Siluriformes Auchenipteridae, Centromochlinae) from Tocantins-Araguaia River drainage, Zootaxa 4950 (1), pp. 149-165: 150-159 150-159
Leptomantispa chaos     Alvim, Breno Ganns Chaves, Machado, Renato Jose Pires & Krolow, Tiago Kütter, 2019, Mantidflies (Neuroptera, Mantispidae) from Tocantins state (Brazil): distribution and identification key, Check List 15 (2), pp. 275-285: 282 282