Sharpnose sevengill shark

Sharpnose sevengill shark; Temporal range: Danian to Present
Conservation status
	; Near Threatened (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Subdivision:	Selachimorpha
Order:	Hexanchiformes
Family:	Hexanchidae
Genus:	Heptranchias
Species:	H. perlo
Binomial name
	Heptranchias perlo; (Bonnaterre, 1788)
	Range of the sharpnose sevengill shark
Synonyms
	Heptranchias angio Costa, 1857; Heptranchias dakini Whitley, 1931; Heptranchias deani Jordan & Starks, 1901; Heptrancus angio Costa, 1857; Notidanus cinereus pristiurus Bellotti, 1878; Squalus cinereus Gmelin, 1789; Squalus perlo Bonnaterre, 1788

The sharpnose sevengill shark (Heptranchias perlo), also known as one-finned shark, perlon shark, sevengill cow shark, sharpsnouted sevengill or slender sevengill, is a species of shark in the family Hexanchidae, and the only living species in the genus Heptranchias.^[3] Found almost circumglobally in deep water, it is one of the few species of sharks with seven pairs of gill slits as opposed to the usual five. The other shark species with seven gill slits is the broadnose sevengill shark. Though small, this shark is an active, voracious predator of invertebrates and fish. When caught, this species is notably defensive and will attempt to bite. It is of minor commercial importance.^[4]

^ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Chondrichthyes entry)". Bulletins of American Paleontology. 364: 560. Archived from the original on February 23, 2008. Retrieved January 9, 2008.
^ Paul, L. & Fowler, S. (SSG Australia & Oceania Regional Workshop, March 2003). Heptranchias perlo. The IUCN Red List of Threatened Species doi:10.2305/IUCN.UK.2003.RLTS.T41823A10572878.en
^ "Heptranchias perlo :: Florida Museum of Natural History". www.flmnh.ufl.edu. Retrieved 2016-04-04.
^ Cite error: The named reference compagno was invoked but never defined (see the help page).

[1] Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Chondrichthyes entry)". Bulletins of American Paleontology. 364: 560. Archived from the original on February 23, 2008. Retrieved January 9, 2008.

[iucn-2] Paul, L. & Fowler, S. (SSG Australia & Oceania Regional Workshop, March 2003). Heptranchias perlo. The IUCN Red List of Threatened Species doi:10.2305/IUCN.UK.2003.RLTS.T41823A10572878.en

[flmnh.ufl.edu-3] "Heptranchias perlo :: Florida Museum of Natural History". www.flmnh.ufl.edu. Retrieved 2016-04-04.

[compagno-4] Cite error: The named reference compagno was invoked but never defined (see the help page).

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Sharpnose sevengill shark Temporal range: Danian to Present

Conservation status
Near Threatened (IUCN 3.1)^[2]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Subdivision:	Selachimorpha
Order:	Hexanchiformes
Family:	Hexanchidae
Genus:	Heptranchias
Species:	H. perlo
Binomial name
*Heptranchias perlo* (Bonnaterre, 1788)

Range of the sharpnose sevengill shark
Synonyms
Heptranchias angio Costa, 1857 Heptranchias dakini Whitley, 1931 Heptranchias deani Jordan & Starks, 1901 Heptrancus angio Costa, 1857 Notidanus cinereus pristiurus Bellotti, 1878 Squalus cinereus Gmelin, 1789 Squalus perlo Bonnaterre, 1788