Knifetooth dogfish  (Scymnodon ringens)

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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->
    • Squaliformes - Sleeper and dogfish sharks->

      • Squalidae - Dogfish sharks->
      • Somniosidae - Sleeper sharks->

        • Somniosus - Somniosus->
        • Centroscymnus - Centroscymnus->
        • Centroselachus - Centroselachus->
        • Zameus - Zameus->
        • Scymnodalatias - Scymnodalatias->
        • Scymnodon - Scymnodon->

          • Japanese velvet dogfish (Scymnodon ichiharai)
          • Largespine velvet dogfish (Scymnodon macracanthus)
          • Knifetooth dogfish (Scymnodon ringens)
      • Etmopteridae - Lantern sharks->
      • Centrophoridae - Gulper sharks->
      • Dalatiidae - Sleeper sharks->
      • Oxynotidae - Rough sharks->
    • Echinorhiniformes - Bramble sharks->
    • Pristiophoriformes - Saw sharks->
  • Holocephali - Chimaeras->
• Agnatha - Jawless fishes->