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Hexanchus
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Order Hexanchiformes Buen, 1926
Family Hexanchidae Gray, 1851
Genus Hexanchus Rafinesque, 1810
Hexanchu griseus (Bonnaterre, 1788): Kagurazame, Bluntnose sixgill shark

Hexanchus nakamurai Teng, 1962: Sirokagurazame, Bigeye sixgill shark


Hexanchus griseus (Bonnaterre, 1788)/ Hexanchus gigas Sismonda, 1857: Pliocene, Huarra Formation, Caldera Site, Atacama Desert, Copiapo, Chile


Hexanchus griseus (Bonnaterre, 1788)/ Hexanchus gigas Sismonda, 1857: Pliocene, Yorktown Formation, Beaufort County, North Carolina


Hexanchus griseus (Bonnaterre, 1788)/ Hexanchus andersoni Jordan, 1907: Miocene, Round Mountain Formation, Kern County, CA



Notidanodon
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Order Hexanchiformes Buen, 1926
Family Hexanchidae Gray, 1851
Genus Notidanodon Cappetta, 1975

Notidanodon lanceolatus (Woodward, 1886): Albian, Stary Oskol, Belgorod Region, Russia





Notorhynchus/"Notidanus"
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Genus Notorhychus Ayres, 1855

Notorhynchus cepedianus (Péron, 1807)/ N. primigenius (Agassiz, 1843)/ N. kempi Ward, 1979: Pliocene, Yorktown Formation (unit 1)Beaufort County, North Carolina


Notorhynchus cepedianus Langhian, Pungo River Formation, Beaufort County, North Carolina Langhian, Calvert Formation, Calvert Cliffs, Calvert County, MD


Notorhynchus cepedianus: Chattian, Weinheim, Alzey, Germany


Notorhynchus serratissimus (Agassiz, 1844): Bartonian, Shorym Formation, Kujulus, Mangyshlak, Kazakhstan, Bartonian, Tusbair Mangyshlak, Kazakhstan



Weltonia
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Genus Weltonia Ward, 1979

Weltonia ancistrodon (Arambourg, 1952): Thanetian,



Heptranchias
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Genus Heptranchias Rafinesque, 1810

Heptranchias perlo: Edo-aburazame, Sharpnose sevengill shark


Heptranchias sp. (?howellii)Ypressian, Khouribga Oued Zem Region, Morocco


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