Heptranchias

Life-forms

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Classis: Chondrichthyes
Subclassis: Elasmobranchii
Superordo: Selachimorpha
Ordo: Hexanchiformes
Familia: Hexanchidae
Genus: Heptranchias
Species: H. perlo – †H. ezoensis – †H. howelii – †H. tenuidens
Name

Heptranchias Rafinesque, 1810
References
Links

Zicha, Ondřej et al. Heptranchias Rafinesque, 1810 – Taxon details on Biological Library (BioLib).
Global Biodiversity Information Facility. 2019. GBIF Backbone Taxonomy. Checklist dataset. Taxon: Heptranchias.
Heptranchias – Taxon details on World Register of Marine Species (WoRMS).

Heptranchias is a genus of sharks in the family Hexanchidae.
Species

Heptranchias perlo (Bonnaterre, 1788) (sharpnose sevengill shark)
†Heptranchias ezoensis Applegate & Uyeno, 1968
†Heptranchias howelli Reed, 1946
†Heptranchias karagalensis Kozlov in Zhelezko & Kozlov, 1999
†Heptranchias tenuidens Leriche, 1938

Fossil record

Fossils of Heptranchias are found in marine strata from the Cretaceous period. Fossils are known from various localities in Europe, North America, South America, New Zealand and Japan.[3]
Heptranchias perlo lower teeth
Bibliography

Bonnaterre, J.P. 1788, Tableau encyclopédique et méthodique des trois règnes de la nature... Ichthyologie. Paris. Tableau encyclopédique et méthodique des trois règnes de la nature... Ichthyologie.: i-lvi + 1-215, Pls. A-B + 1-100.
Compagno, L.J.V. 1. Hexanchiformes to Lamniformes // Sharks of the world. An annotated and illustrated catalogue of sharks species known to date. — FAO Fish Synop., 1984. — Vol. 4. — P. 14. — 249 p.
Heptranchias. FishBase. Ed. Rainer Froese and Daniel Pauly. February 2009 version. N.p.: FishBase, 2009.
Rafinesque, C.S. 1810, Caratteri di alcuni nuovi generi e nuove specie di animali e piante della sicilia, con varie osservazioni sopra i medisimi. (Part 1 involves fishes, pp. [i-iv] 3-69 [70 blank], Part 2 with slightly different title, pp. ia-iva + 71-105 [106 blank]). Caratteri di alcuni nuovi generi e nuove specie di animali e piante della sicilia, con varie osservazioni sopra i medisimi.. Pls. 1-20. [Dates to 1810 (see Holthius & Boeseman 1977 [ref. 6877], Wheeler 1988 [ref. 6878]). Also see Boewe 1982 [ref. 6030].]