| Hexanchiformes | Frilled and cow sharks | kamtandade hajar | |||
| Chlamydoselachidae | Frilled sharks | kråshajar | Tiburones anguila | Requins à collerette | |
| Chlamydoselachus | kråshajar | ||||
| anguineus | Frilled shark, Eel shark | kråshaj | Tiburón anguila | Requin lézard | |
| sp. | South African frilled shark | Sydafrikansk kråshaj | |||
| Hexanchidae | Cowsharks, sixgill sharks, sevengill sharks | kamtandade hajar | Cañabotas | Requins à six et sept fentes barnchiales, Requin perlon, Requins vaches | |
| Heptranchias | Sjubågiga kamtandhajar | ||||
| perlo | Sharpnose sevengill shark | Sjubågig kamtandhaj | Cañabota bocadulce | Requin perlon | |
| Hexanchus | Sexbågiga kamtandhajar | ||||
| griseus | Bluntnose sixgill shark | Sexbågig kamtandhaj | Cañabota gris | Requin griset | |
| nakamurai | Bigeyed sixgill shark | Storögd kamtandhaj | Cañabota ojigrande | Requin vache | |
| Notorynchus | Sjugälade brednoshajar | ||||
| cepedianus | Broadnose sevengill shark | Sjugälad brednoshaj | Cañabota gata | Platnez | |