Classification of Arambourg 1940
Subfm. †Ganopristinae Arambourg?
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G. †Marckgrafia Weiler 1935
G. †Onchopristis Stromer 1917
G. †Onchosaurus Gervais 1852
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Subg. †Onchosaurus (Ischyrhiza) Leidy 1856
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†Onchosaurus (Ischyrhiza) antiquus Leidy 1856
†Onchosaurus (Ischyrhiza) maroccanus Arambourg 1935
†Onchosaurus (Ischyrhiza) mirus Leidy 1856
†Onchosaurus (Ischyrhiza) stromeri Checchia-Rispoli 1933
Invalid names: Dalpiazia Checchia-Rispoli 1933 [synonym], Gigantichthys Dames 1887 [synonym]
G. †Schizorhiza Weiler 1930
G. †Sclerorhynchus Woodward 1889