Smooth hammerhead  (Sphyrna zygaena)

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Taxonomy of Fishes

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

  • Elasmobranchii - Sharks and Rays->

    • Lamniformes - Mackerel sharks->
    • Carcharhiniformes - Ground sharks->

      • Carcharhinidae - Requiem sharks->
      • Scyliorhinidae - Cat sharks->
      • Pentanchidae - Deepwater catsharks->
      • Triakidae - Houndsharks->
      • Sphyrnidae - Hammerheads->

        • Sphyrna - Sphyrna->

          • Smooth hammerhead (Sphyrna zygaena)
          • Bonnethead shark (Sphyrna tiburo)
          • Great hammerhead (Sphyrna mokarran)
          • Scalloped bonnethead (Sphyrna corona)
          • Whitefin hammerhead (Sphyrna couardi)
          • Carolina hammerhead (Sphyrna gilberti)
          • Scalloped hammerhead (Sphyrna lewini)
          • Scoophead (Sphyrna media)
          • Smalleye hammerhead (Sphyrna tudes)
        • Eusphyra - Eusphyra->
      • Atelomycteridae - Coloured catsharks->
      • Galeocerdonidae - Tiger sharks->
      • Hemigaleidae - Weasel sharks->
      • Leptochariidae - Barbeled houndsharks->
      • Proscylliidae - Finback catsharks->
      • Pseudotriakidae - False catsharks->
    • 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->
    • Echinorhiniformes - Bramble sharks->
    • Pristiophoriformes - Saw sharks->
  • Holocephali - Chimaeras->
• Agnatha - Jawless fishes->