Six gill sharks

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Six gill sharks
Blunt-nosed six gill shark (Hexanchus griseus)

Blunt-nosed six gill shark ( Hexanchus griseus )

Systematics
Subclass : Plate gill (Elasmobranchii)
without rank: Sharks (selachii)
Superordinate : Squalomorphii
Order : Hexanchiformes
Family : Comb tooth sharks (Hexanchidae)
Genre : Six gill sharks
Scientific name
Hexanchus
Rafinesque , 1810

The six-gill sharks ( Hexanchus ) are a genus of primitive sharks from the order of the Hexanchiformes that live in deep water . The genus includes only three recent species with the blunt-nosed six-gill shark ( Hexanchus griseus ), the bigeye six- gill shark ( Hexanchus nakamurai ) and Hexanchus vitulus .

features

Six-gill sharks are characterized by the six gill slits on each side of the head, which distinguish them from all other sharks today, which usually have five gill slits. They are simply colored with no spots or dark fin tips. Their lower teeth are large, flat, and comb-like with one larger and eight to ten smaller tips.

Single receipts

  1. ↑ Daly-Engel, TS, Baremore, IE, Grubbs, RD, Gulak, SJB, Graham, RT & Enzenauer, MP (2018): Resurrection of the sixgill shark Hexanchus vitulus Springer & Waller, 1969 (Hexanchiformes, Hexanchidae), with comments on its distribution in the northwest Atlantic Ocean. Marine Biodiversity, February 2018.
  2. ^ LJV Compagno: Genus Hexanchus , Sharks of the World, Marine Species Identification Portal, accessed March 14, 2014

Web links

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