Acanthonemus Agassiz, 1833 † (original description)
Coelorhynchus Agassiz, 1844 † accepted as Cylindracanthus Leidy, 1856 † (original description)
Gasteracanthus Agassiz, 1833 † (original description)
Gasteronemus Agassiz, 1833 † (original description)
Hemirhynchus Agassiz, 1844 † (original description)
Isurus Agassiz, 1844 † accepted as Isurichthys Woodward, 1901 † (original description)
Pleiocnemus Agassiz, 1844 † (original description)
Pleionemus Agassiz, 1844 † (original description)