Francais | English | Espanõl

From Wikipedia, the free encyclopedia

iCow sharks
Image:Six-gill shark.jpg
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Chondrichthyes Subclass: Elasmobranchii Order: Hexanchiformes Family: Hexanchidae Gray, 1851
Genera and species
See text.

</div>

Cow sharks (Hexanchidae) are a family of sharks characterized by extra pairs of gill slits. There are probably only two seven-gilled genera, Heptranchias and Notoryhncus (Allen, 45).

[edit] Genera and species

• Genera Heptranchias
  • Sharpnose seven-gill shark, Heptranchias perlo (Bonnaterre, 1788)
• Genera Hexanchus
  • Bluntnose sixgill shark, Hexanchus griseus (Bonnaterre, 1788)
  • Bigeye sixgill shark, Hexanchus nakamurai Teng, 1962
• Genera Notorynchus
  • Broadnose sevengill shark, Notorynchus cepedianus (Péron, 1807)

[edit] Reference

• Allen, Thomas B. The Shark Almanac. New York: The Lyons Press, 1999. ISBN 1-55821-582-4

[edit] External links

• ReefQuest Centre: Order Hexanchiformes: Cow Sharks

de:Sechskiemerhaie

lt:Daugiažiauniai rykliai (šeima) nl:Koehaaien