The Class Chondrichthyes contains these Orders:

• 3. Chimaeriformes [chimaeras]
• 4. Heterodontiformes [bullhead sharks]
• 5. Orectolobiformes [carpet sharks]
• 6. Lamniformes [mackerel sharks]
• 7. Carcharhiniformes [ground sharks]
• 8. Hexanchiformes [six-gill sharks]
• 9. Echinorhiniformes [bramble sharks]
• 10. Squaliformes [dogfish sharks]
• 11. Squatiniformes [angel sharks]
• 12. Pristiophoriformes [saw sharks]
• 13. Torpediniformes [electric rays]
• 14. Pristiformes [sawfishes]
• 15. Rajiformes [skates]
• 16. Myliobatiformes [stingrays]