After Bell, 1997, Creisler [& Poling], 2000 and Christiansen & Bonde, 2002

<==o †Mosasaurinae (Gervais, 1853) Williston, 1897
   |?- †Amphekepubis johnsoni Mehl, 1930
   |?- †Moanasaurus mangahouangae Wiffen, 1980 [Rikisaurus tehoensis Wiffen, 1990, “Mosasaurus” flemingi, “Mosasaurus” mangahouangae, Rikkisaurus (lapsus calami)]
   |?-o †Leiodontini Lingham-Soliar, 1995
   |  |-- †Kourisodon puntledgensis Nicholls & Meckert, 2002
   |  `--o †Liodon Agassiz, 1846 [Leiodon Owen, 1841]
   |     |?- †?L. hobetsuensis [“Mosasaurus” hobetsuensis?]
   |     |-- †L. anceps (Owen, 1940)
   |     |-- †L. mosasauroides Gaudry, 1892
   |     `-- †L. sectorius Cope, 1971
   |-- †Dallasaurus turneri Polcyn & Bell, 2005
   `--+?- †Clidastes iguanavus Cope, 1868 [nomen dubium, type of Clidastes]
      |-- †Clidastes liodontus Merriam, 1894
      `--+-- †Clidastes moorevillensis Bell, under discription [nomen nudum]
         |-- †Clidastes sp.
         `--+-- †Clidastes prophyton Cope, 1869 [neotype of Clidastes]
            `--+--o †Globidensini Bell, 1997
               |  |?- †Carinodens belgicus (Woodward, 1891) [“Bottosaurus” belgicus Woodward, 1891, Compressidens Dollo, 1924 [preoccupied], “Globidens” fraasi Dollo, 1913]
               |  |--o †Globidens Gilmore, 1912
               |  |  |-- †G. alabamaensis Gilmore, 1912
               |  |  |-- †G. dakotensis Russell, 1975
               |  |  `-- †G. phosphaticus Bardet, Pereda Suberbiola, Iarochène, Amalik & Bouya, 2005
               |  |?- †Dollosaurus lutugini Yakovlev, 1901
               |  `--+-- †Plesiotylosaurus crassidens Camp, 1942
               |     `--o †Prognathodon Dollo, 1889 sensu Christiansen & Bonde, 2002 [Prognathosaurus Dollo, 1889, Brachysaurus Williston, 1897]
               |        |?- †P. stadtmani Kass, 1999
               |        |?- †P. waiparaensis Gregg & Welles, 1971
               |        |-- †P. rapax (Hay, 1902
               |        `--+-- †P. overtoni (Williston, 1897) [Brachysaurus overtoni Williston, 1897]
               |           |?- †P. giganteus Dollo, 1904
               |           `--+-- †P. solvayi (Dollo, 1889) [Prognathosaurus solvayi Dollo, 1889]
               |              `-- †P. currii Christiansen & Bonde, 2002
               `--o †Plotosaurini sensu Bell, 1997 [Mosasaurus Conybeare in Parkinson, 1822 sensu lato [Pterycollosaurus Dollo, 1882, Batrachiosaurus Harlan, 1865]]
                  |?- †“Mosasaurus” beaugei
                  |?- †“Mosasaurus” dekayi Bronn, 1838
                  |?- †“Mosasaurus” iembeensis
                  |?- †“Mosasaurus” lemonnieri Dollo, 1889
                  |?- †“Mosasaurus” mokoroa Gregg & Welles, 1971
                  |-- †“Mosasaurus” conodon (Cope, 1881) [Clidastes conodon Cope, 1881]
                  `--+-- †“Mosasaurus” missouriensis (Harlan, 1834) [Ichthyosaurus missouriensis Harlan, 1834, Batrachiosaurus Harlan, 1865, †“Mosasaurus” maximiliani Goldfuss, 1845, Pterycollosaurus Dollo, 1882]
                     `--+--+-- †“Mosasaurus” sp.
                        |  `-- †Mosasaurus hoffmanni Mantell, 1829 [type of Mosasaurus] [incl. M. maximus Cope, 1869; Mulder, 1999]
                        `--o †Plotosaurus Camp, 1951 [Kolposaurus Camp, 1942]
                           |-- †P. bennisoni (Camp, 1942) [Kolposaurus bennisoni Camp, 1942]
                           `-- †P. tuckeri (Camp, 1942) [Kolposaurus tuckeri Camp, 1942]

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