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The broadnose sevengill shark (Notorynchus cepedianus) is the only extant member of the genus Notorynchus, in the family Hexanchidae.It is recognizable because of its seven gill slits, while most shark species have five gill slits, with the exception of the members of the order Hexanchiformes and the sixgill sawshark.
The sharpnose sevengill shark is reasonably small and is located in generally deep water, and these characteristics classify this shark as harmless to humans. [3] Small to moderate numbers of sharpnose sevengill sharks are captured as bycatch in certain deepwater commercial fisheries on longlines or in trawls . [ 2 ]
But the fisherman argued that the shark was a distinct species: a broadnose sevengill. Sevengills, which can grow up to nine feet long, are found off the west coast of the United States and ...
Broadnose sevengill shark (Notorynchus cepedianus) Scientific classification; Domain: ... There is one extant species. Extant species. Broadnose sevengill shark ...
Meghan Holst studies the broadnose sevengill shark, so she was naturally concerned when record-setting rain this year altered the shark's nursery grounds in San Francisco Bay. But the species ...
Frilled sharks contain only two extant species of deepsea creatures which are typically weakened in areas closer to the surface. The most widely known species still surviving is the frilled shark , known as a living fossil, along with the Southern African frilled shark , found along coastal areas of South Africa.
The first shark-like chondrichthyans appeared in the oceans 400 million years ago, [1] developing into the crown group of sharks by the Early Jurassic. [2] Listed below are extant species of shark. Sharks are spread across 512 described and 23 undescribed species in eight orders. The families and genera within the orders are listed in ...
There are numerous species of sharks found in the Pacific Ocean; of these sharks, 36 [1] have habitat ranges throughout the coastlines and surrounding waters of California, as identified below. Identifications include common names; scientific names; the taxonomic rank, family; conservation statuses according to IUCN; and an image.