PDF) A systematic revision of the South American freshwater stingrays (Chondrichthyes: Potamotrygonidae)
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A systematic revision of the South American freshwater stingrays (Chondrichthyes: Potamotrygonidae)

FRESHWATER STINGRAYS OF THE GREEN RIVER FORMATION OF WYOMING (EARLY EOCENE), WITH THE DESCRIPTION OF A NEW GENUS AND SPECIES AND AN ANALYSIS OF ITS PHYLOGENETIC RELATIONSHIPS (CHONDRICHTHYES: MYLIOBATIFORMES)

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PDF) A systematic revision of the South American freshwater stingrays ( Chondrichthyes: Potamotrygonidae)

PDF) Record of the freshwater stingrays Potamotrygon brachyura and P. motoro (Potamotrygonidae) in the lower Uruguay River, South America
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Potamotrygonidae - Wikipedia
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