NotorynchusNotorynchus is a genus of deepwater sharks in the family Hexanchidae. There is one extant species.Extant species Broadnose sevengill shark Péron, 1807Extinct speciesNotorynchus borealus Jordan & Hannibal, 1923Notorynchus kempi Ward, 1979Notorynchus lawleyi Cigala Fulgosi, 1983Notorynchus primigenius Agassiz, 1843Notorynchus serratissimus Agassiz, 1843Notorynchus subrecurvus Oppenheimer, 1907