Cow sharks

Cow sharks

Taxobox
name = Cow sharks


image_width = 250px
regnum = Animalia
phylum = Chordata
classis = Chondrichthyes
subclassis = Elasmobranchii
ordo = Hexanchiformes
familia = Hexanchidae
familia_authority = Gray, 1851
subdivision_ranks = Genera and species
subdivision = See text.

Cow sharks, or the 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).

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)

References

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

External links

* [http://www.elasmo-research.org/education/shark_profiles/hexanchiformes.htm ReefQuest Centre: "Order Hexanchiformes: Cow Sharks"]


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  • cow sharks — daugiažiauniai rykliai statusas T sritis zoologija | vardynas taksono rangas būrys atitikmenys: lot. Hexanchiformes angl. cow sharks; frill sharks; frilled sharks rus. многожаберникообразные ryšiai: platesnis terminas – kremzlinės žuvys… …   Žuvų pavadinimų žodynas

  • cow sharks — Notidanian No ti*da ni*an, n. [Gr. ? back + ? comely.] (Zo[ o]l.) Any one of several species of sharks of the family {Notidanid[ae]}, or {Hexanchid[ae]}. Called also {cow sharks}. See {Shark}. [1913 Webster] …   The Collaborative International Dictionary of English

  • cow sharks — daugiažiauniai rykliai statusas T sritis zoologija | vardynas taksono rangas šeima apibrėžtis Atogrąžų ir paatogrąžio platumų vandenynai, jų priekrantės ir didelės – iki 1,2 km gelmės. 3 gentys, 6 rūšys, kūno ilgis – iki 2–5 m. Gyvavedžiai.… …   Žuvų pavadinimų žodynas

  • Cow shark — Cow sharks Temporal range: Upper Jurassic–Recent …   Wikipedia

  • Sharks de San José — Données clés Fondé en 1991 …   Wikipédia en Français

  • Cow Palace — Former names California State Livestock Pavilion Location 2600 Geneva Avenue, Daly City, California 94117 …   Wikipedia

  • Cow Palace — Frühere Namen …   Deutsch Wikipedia

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  • cow shark — n. any of a family (Hexanchidae, order Hexanchiformes) of primitive sharks, having six or seven gill slits …   English World dictionary

  • cow shark — noun large primitive shark widely distributed in warm seas • Syn: ↑six gilled shark, ↑Hexanchus griseus • Hypernyms: ↑shark • Member Holonyms: ↑Hexanchus, ↑genus Hexanchus * * * …   Useful english dictionary

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