Frog shark  (Somniosus longus)

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->

          • Greenland shark (Somniosus microcephalus)
          • Southern sleeper shark (Somniosus antarcticus)
          • Taiwan sleeper shark (Somniosus cheni)
          • Frog shark (Somniosus longus)
          • Pacific sleeper shark (Somniosus pacificus)
          • Little sleeper shark (Somniosus rostratus)
        • Centroscymnus - Centroscymnus->
        • Centroselachus - Centroselachus->
        • Zameus - Zameus->
        • Scymnodalatias - Scymnodalatias->
        • Scymnodon - Scymnodon->
      • Etmopteridae - Lantern sharks->
      • Centrophoridae - Gulper sharks->
      • Dalatiidae - Sleeper sharks->
      • Oxynotidae - Rough sharks->
    • Echinorhiniformes - Bramble sharks->
    • Pristiophoriformes - Saw sharks->
  • Holocephali - Chimaeras->
• Agnatha - Jawless fishes->