Classification of the genus Sphenodus
G. †Sphenodus Agassiz 1843
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†Lamna (Sphenodus) longidens Agassiz 1843
†Lamna (Sphenodus) plana Agassiz 1843
†Sphenodus alpinus Guembel 1861
†Sphenodus helveticus de Beaumont 1960
†Sphenodus longidens Agassiz 1843
†Sphenodus nitidus Wagner 1862
†Sphenodus rectidens Emmons 1858
Invalid names: Orthacodus Woodward 1889 [objective synonym]