700 Scymnodon ringens Barbosa du Bocage & de Brito Capello, 1864 Somniosidae Sleeper sharks Squaliformes Elasmobranchii Knifetooth dogfish Eastern Atlantic: along the slope from Scotland to Spain, Portugal, Senegal. Southwest Pacific: New Zealand (Ref. 26346). FISH 1556439 Scymnodon ringens ISH 156-1974 1974 Scymnodon ringens 818 - 854 m ISH 157-1974 1974 Scymnodon ringens 854 - 818 m ISH 793-1974 1974 Scymnodon ringens 997 - 1005 m ISH 821-1974 1974 Scymnodon ringens 978 - 985 m ISH 148-1975 1975 Scymnodon ringens 606 - 650 m AMNH 98163 1979 Scymnodon ringens AMNH 98164 1979 Scymnodon ringens ISH 3351-1979 1979 Scymnodon ringens 814 m ISH 3362-1979 1979 Scymnodon ringens 794 m ISH 3417-1979 1979 Scymnodon ringens 1004 - 1008 m ISH 3473-1979 1979 Scymnodon ringens 1000 m ISH 3756-1979 1979 Scymnodon ringens 1000 - 1050 m ISH 3757-1979 1979 Scymnodon ringens 1000 - 1050 m MOVI 37375 1986 Scymnodon ringens 350 - 800 m AMNH 96741 1989 Scymnodon ringens MOVI 17257 2000 Scymnodon ringens 657 - 679 m