Potamotrygon tigrina, a new species of freshwater stingray from the upper Amazon basin, closely related to Potamotrygon schroederi Fernandez-Yépez, 1958 (Chondrichthyes: Potamotrygonidae)

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• Heliotrygon
• Potamotrygonidae
• Potamotrygon
• Plesiotrygon