After Bell, 1997, Creisler [& Poling], 2000, Polcyn & Bell, 2005, Cuthbertson, Mallon, Campione & Holmes, 2007, and Konishi & Caldwell, 2011

<==o †Russelosaurina [Tylosaurinae & Plioplatecarpinae]
   |--o †Tethysaurinae Makádi, Caldwell & Osi, 2012 [“Russellosaurinae”]
   |  |-- †Pannoniasaurus inexpectatus Makádi, Caldwell & Osi, 2012
   |  `--+-- †Tethysaurus nopcsai Bardet, Pereda-Suberbiola & Jalil, 2003
   |     `--+-- †Yaguarasaurus columbianus Paramo, 1994
   |        `-- †Russellosaurus coheni Polcyn & Bell, 2005
   `--+--o †Tylosaurinae (Williston, 1897) sensu Bell, 1997, Polcyn & Bell, 2005
      |  |?- †Lakumasaurus antarcticus Novas et al., 2002
      |  `--o †Tylosaurus Marsh, 1872 sensu lato [taxonomic history]
      |     |-- †“Tylosaurus” kansasensis Everhart, 2005 [was “Tylosaurus n. sp. under description” (Bell, 1997)]
      |     |-- †“Tylosaurus” ivoensis (Persson, 1963) U. Cret. NEu. [†Mosasaurus ivoensis Persson, 1963]
      |     `--+-- †“Tylosaurus” nepaeolicus (Cope, 1874)
      |        `--+-- †Tylosaurus proriger (Cope, 1869); Marsh, 1872 [taxonomic history]
      |           `--+?- †Taniwhasaurus oweni Hector, 1874 [taxonomic history]
      |              `--o †Hainosaurus Dollo, 1885
      |                 |-- †H. bernardi Dollo, 1885
      |                 `-- †H. pembinensis Nicholls, 1988
      `--o †Plioplatecarpinae (Dollo, 1884) sensu Bell, 1997, Polcyn & Bell, 2005 [Plioplatecarpidae Dollo, 1884]
         |?- †Igdamanosaurus aegyptiacus (Zdansky, 1935) [Globidens aegyptiacus Zdansky, 1935]
         |--o †Ectenosaurus Russell, 1967
         |  |-- †E. clidastoides (Merriam, 1894)
         |  `-- †E. sp.
         `--+-- †Angolosaurus bocagei Telles-Antunes, 1964 [“Platecarpus" bocagei (Telles-Antunes, 1964)]
            `--+--o †Selmasaurus Wright & Shannon, 1988
               |  |-- †S. russelli Wright & Shannon, 1988
               |  `-- †S. johnsoni Polcyn & Everhart, 2008
               `--+-- †Plesioplatecarpus planifrons (Cope, 1874) Konishi & Caldwell, 2011 [Clidastes planifrons Cope, 1874; Platecarpus planifrons Williston, 1898; Platecarpus planifrons (Cope); Konishi & Caldwell, 2007]
                  `--+-- †Platecarpus tympaniticus (Cope, 1869) Cope, 1869 [taxonomic history]
                     `==o †Latoplatecarpus Konishi & Caldwell, 2011
                        |-- †L. willistoni Konishi & Caldwell, 2011 (type)
                        `--+-- †L. nichollsae (Cuthbertson, Mallon, Campione & Holmes, 2007) [Plioplatecarpus nichollsae Cuthbertson, Mallon, Campione & Holmes, 2007] L.Cret. NAm.
                           |-- †“Platecarpus” somenensis Thevenin, 1896
                           `--o †Plioplatecarpus Dollo, 1882 [Oterognathus Dollo, 1889]
                              |?- †“Mosasaurus” scanicus
                              |?- †P. crassartus
                              |?- †P. depressus [Baptosaurus fraternus Cope, 1869-70]
                              |-- †P. sp. [UNO 861-2] [Holmes, 1996] [Late Cretaceous, Bearpaw Formation, North America]
                              `--+-- †P. primaevus Russell, 1967
                                 `--+-- †P. houzeaui (Dollo, 1889) [Oterognathus houzeaui Dollo, 1889]
                                    `-- †P. marshii Dollo, 1882

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