- BatrachiosaurusHarlan, 1839
- BatrachiotheriumHarlan, 1839
- MacrosaurusOwen, 1849
- DrepanodonLeidy, 1856
- LesticodusLeidy, 1859
- BaseodonLeidy, 1865
- NectoportheusCope, 1868
- PterycollosaurusDollo, 1882
- Lacerta giganteavon Sömmerring, 1820
- Mososaurus hoffmanniiMantell, 1829
- Mosasaurus belgicusHoll, 1829
- Mosasaurus camperiMeyer, 1832
- Mosasaurus dekayiBronn, 1838
- Mosasaurus hoffmanniOwen, 1840
- Mosasaurus majorDe Kay, 1842
- Mosasaurus occidentalisMorton, 1844
- Mosasaurus meirsiiMarsh, 1869
- Mosasaurus princepsMarsh, 1869
- Mosasaurus maximusCope, 1869
- Mosasaurus giganteusCope, 1869
- Mosasaurus fulciatusCope, 1869
- Mosasaurus oarthusCope, 1869
M. missouriensis sinonimleri [5][6] - Ichthyosaurus missouriensisHarlan, 1834
- Ictiosaurus missuriensisHarlan, 1834
- Batrachiosaurus missouriensisHarlan, 1839
- Batrachiotherium missouriensisHarlan, 1839
- Mosasaurus maximilianiGoldfuss, 1845
- Mosasaurus neovidiiMeyer, 1845
- Pterycollosaurus maximilianiDollo, 1882
- Mosasaurus horridusWilliston, 1895
M. conodon sinonimleri [7] - Clidastes conodonCope, 1881
- Mosasaurus lemonnieriDollo, 1889
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