Hexanchiformes

(Frilled and Cow Sharks)

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This order represents a small group of deep sea sharks.  The most distinct feature is six to seven gill slits, considered a primitive feature not seen on most modern sharks.  Little scientific data is known on most of these species as they rarely are seen by humans.

 

Families of Hexanchiformes

 
Chlamydoselachidae
      (Frilled sharks)
  • 1 generea
  • 2 species
Hexanchidae
      (Cow sharks)
  • 3 generea
  • 6 species
 
  1. Hexanchiformes »» Frilled sharks (Chlamydoselachidae)

    2. The Genera of Frilled sharks
    • »» Chlamydoselachus

      • Frilled shark (Chlamydoselachus anguineus)
      • Frilled shark (Chlamydoselachus sp. nov. A)


  2. Hexanchiformes »» Cow Sharks (Hexanchidae)

    3. The Genera of Cow Sharks
    • »» Heptranchias

      • One-finned shark (Heptranchias perlo)

    • »» Hexanchus

      • Bluntnose sixgill shark (Hexanchus griseus)
      • Bigeye sixgill shark (Hexanchus nakamurai)

    • »» Notorynchus

      • Broadnose sevengill shark (Notorynchus cepedianus)



            
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