| FAO | Key Name |
|---|---|
| Pacific, Western Central | Key to the species of cowsharks, sixgill, and sevengill sharks (Hexanchidae) occuring in the Western Central Pacific. |
| Atlantic, Western Central | Key to the species of cowsharks, sixgill, and sevengill sharks (Hexanchidae) occurring in the Western Central Atlantic. |
| Pacific, Northeast | Key to the Hexanchidae of Alaska. |