Anthracerpetum Lydekker, 1890 † (original description)
Chelyosaurus Lydekker, 1890 † (original description)
Cirognathus Lydekker, 1890 † (original description)
Cistecephalus Lydekker, 1890 † (original description)
Eupetocephalus Lydekker, 1890 † (original description)
Euscelesaurus Lyddeker, 1890 † accepted as Euskelosaurus Huxley, 1866 † (original description)
Hoplosaurus Lydekker, 1890 † (original description)
Hylerpetum Lydekker, 1890 † (original description)
Lepterpetum Lydekker, 1890 † (original description)
Macromerium Lydekker, 1890 † (original description)
Melanerpertum Lydekker, 1890 † (original description)
Metoposaurus Lydekker, 1890 † (original description)
Ophiderpetum Lydekker, 1890 † accepted as Ophiderpeton Etheridge, 1866 † (original description)
Orthopleurosaurus Lydekker, 1890 † (original description)
Pariasaurus Lydekker, 1890 † accepted as Pareiasaurus Owen, 1876 † (original description)
Ptychosiagum Lydekker, 1890 † (original description)
Smilerpetum Lydekker, 1890 † (original description)
Udenodon Lydekker, 1890 † (original description)