Great freshwater stingray  (Potamotrygon rex)

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Taxonomy of Fishes

• Osteichthyes - Bony fishes->
• Chondrichthyes - Cartilaginous fishes->

  • Elasmobranchii - Sharks and Rays->

    • Lamniformes - Mackerel sharks->
    • Carcharhiniformes - Ground sharks->
    • Rhinopristiformes - Shovelnose rays->
    • Torpediniformes - Electric rays->
    • Rajiformes - Skates and rays->
    • Orectolobiformes - Carpet shark->
    • Squatiniformes - Angelsharks->
    • Heterodontiformes - Bullhead and horn sharks->
    • Hexanchiformes - Six-gill sharks->
    • Myliobatiformes - Stingrays->

      • Dasyatidae - Stingrays->
      • Mobulidae - Manta rays->
      • Potamotrygonidae - Southamerican freshwater stingrays->

        • Potamotrygon - Potamotrygon->

          • Ocellate river stingray (Potamotrygon motoro)
          • Tiger river stingray (Potamotrygon tigrina)
          • Giant short-tailed river stingray (Potamotrygon brachyura)
          • Amanda’s River Stingray (Potamotrygon amandae)
          • Xingu River ray (Potamotrygon leopoldi)
          • Potamotrygon adamastor (Potamotrygon adamastor)
          • Potamotrygon albimaculata (Potamotrygon albimaculata)
          • Potamotrygon amazona (Potamotrygon amazona)
          • Potamotrygon boesemani (Potamotrygon boesemani)
          • Thorny river stingray (Potamotrygon constellata)
          • Largespot river stingray (Potamotrygon falkneri)
          • Potamotrygon garmani (Potamotrygon garmani)
          • Bigtooth river stingray (Potamotrygon henlei)
          • Porcupine river stingray (Potamotrygon histrix)
          • Potamotrygon humerosa (Potamotrygon humerosa)
          • Potamotrygon jabuti (Potamotrygon jabuti)
          • Potamotrygon limai (Potamotrygon limai)
          • Magdalena river stingray (Potamotrygon magdalenae)
          • Potamotrygon marinae (Potamotrygon marinae)
          • Red-blotched river stingray (Potamotrygon ocellata)
          • Smooth back river stingray (Potamotrygon orbignyi)
          • Potamotrygon pantanensis (Potamotrygon pantanensis)
          • Great freshwater stingray (Potamotrygon rex)
          • Rosette river stingray (Potamotrygon schroederi)
          • Potamotrygon schuhmacheri (Potamotrygon schuhmacheri)
          • Raspy river stingray (Potamotrygon scobina)
          • Parnaiba river stingray (Potamotrygon signata)
          • Potamotrygon tatianae (Potamotrygon tatianae)
          • Potamotrygon wallacei (Potamotrygon wallacei)
          • Maracaibo river stingray (Potamotrygon yepezi)
        • Plesiotrygon - Antenna rays->
        • Heliotrygon - Heliotrygon->
        • Paratrygon - Paratrygon->
        • Styracura - Styracura->
      • Gymnuridae - Butterfly rays->
      • Myliobatidae - Eagle ray->
      • Urotrygonidae - American round stingrays->
      • Aetobatidae - Pacific eagle rays->
      • Hexatrygonidae - Sixgill stingrays->
      • Plesiobatidae - Deepwater stingrays->
      • Rhinopteridae - Cownose rays->
      • Urolophidae - Round rays->
      • Zanobatidae - Panrays->
    • Squaliformes - Sleeper and dogfish sharks->
    • Echinorhiniformes - Bramble sharks->
    • Pristiophoriformes - Saw sharks->
  • Holocephali - Chimaeras->
• Agnatha - Jawless fishes->