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 (Ca

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 (Ca, Zootaxa 4150 (5), pp. 537-565

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http://doi.org/10.11646/zootaxa.4150.5.2

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http://doi.org/10.11646/zootaxa.4150.5.2

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