Cow shark
Videos
Cow sharks are a shark family, the Hexanchidae, characterized by an additional pair or pairs of gill slits. Its species are placed within the 11 genera: Gladioserratus, Heptranchias, Hexanchus, Notida
Six gill shark
View of the six gill openings of Hexanchus nakamurai
Broadnose sevengill shark
Videos
The broadnose sevengill shark 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
Cow shark
…Notidanodon Cappetta, 1975 †Notidanodon lanceolatus Woodward, 1886 †Notidanodon pectinatus Agassiz, 1843 Notorynchus Ayres, 1855 Notorynchus cepedianus (Péron, 1807) (broadnose sevengill shark) †Notorynchus borealus Jordan & Hannibal, 1923 †Notorynchus kempi Ward, 1979 †Notorynchus lawleyi Cigala…
Notorynchus cepedianus SI4
Front part including the seven gills
Bottom part
Jaws