After Fischer et al., 2016

<==o Ophthalmosauria Baur, 1887 sensu Motani, 1998
   `--o †Ophthalmosauridae Baur, 1887
      |-- †Arthropterygius chrisorum Maxwell, 2010
      `--+--o †Ophthalmosaurinae Baur, 1887 sensu Fischer et al., 2012
         |  |-- †Mollesaurus perialus Fernández, 1999 [Mollesaurus periallus Fernández, 1999 (lapsus calami)]
         |  `--+-- †Leninia stellans Fischer, Arkhangelsky, Uspensky, Stenshin, & Godefroit, 2014
         |     |-- †Acamptonectes densus Fischer, Maisch, Naish, Kosma, Liston, Joger, Krüger, Pérez, Tainsh & Appleby, 2012; E.Cret. WEu.
         |     |-- †Ophthalmosaurus natans (Marsh, 1879) [Sauranodon Marsh, 1879 (preocc.); Baptanodon Marsh, 1880])
         |     |-- †Ophthalmosaurus icenicus Seeley, 1874 [Khudiakovia calloviensis Arkhangelsky, 1999]
         |     `--+-- †Cryopterygius kristiansenae Druckenmiller, Hurum, Knutsen & Nakrem, 2012
         |        `--+-- †Janusaurus lundi Roberts, Druckenmiller, Sætre & Hurum, 2014
         |           `-- †Palvennia hoybergeti Druckenmiller, Hurum, Knutsen & Nakrem, 2012
         `--o †Platypterygiinae Arkhangel'skii, 2001 sensu Fischer et al., 2012
            |?- †Maiaspondylus lindoei Maxwell & Caldwell, 2006; L.Cret. NWNAm.
            |-- †Sveltonectes insolitus Fischer, Masure, Arkhangelsky & Godefroit, 2011
            |-- †Aegirosaurus leptospondylus (Wagner, 1853a) Bardet & Fernandez, 2000 [taxonomic history]
            `--+-- †Athabascasaurus bitumineus Druckenmiller & Maxwell, 2010
               `--+--o †Brachypterygius v. Huene, 1922 [Ichthyosaurus de la Beche & Conybeare, 1821; Grendelius McGowan, 1979]
                  |  |?- †B. mordax (McGowan, 1979) McGowan, 1997 [Grendelius mordax McGowan, 1979] [may be synonymous with B. extremus (McGowan, 1997)]
                  |  `-- †B. extremus (Boulenger, 1904) v. Huene, 1922 [Ichthyosaurus extremus Boulenger, 1904]
                  `==o †Platypterygius von Huene, 1922 sensu Maisch & Matzke, 2000 [Myobradypterygius von Huene, 1927; Simbirskiasaurus Ochev & Yefimov, 1985; Pervushovisaurus Arkhangel'skii, 1998; Plutonisaurus Efimov, 1997; Plutoniosaurus (lapsus calami)]
                     |-- †Platypterygius platydactylus (Broili, 1907)
                     `--+-- †Caypullisaurus bonapartei Fernández, 1997
                        `--+--+-- †Sisteronia seeleyi Fischer, Bardet, Guiomar & Godefroit, 2014
                           |  `-- †Platypterygius hercynicus von Huene, 1922
                           `--+-- †Platypterygius americanus (Nace 1939)
                              `--+-- †Platypterygius sachicarum Páramo, 1997
                                 |-- †Pervushovisaurus bannovkensis [Platypterygius (Pervushovisaurus) bannovkensis Arkhangel'skii, 1998; Platypterygius bannovkensis Arkhangel'skii, 1998 sensu Maisch & Matzke, 2000]
                                 |-- †Platypterygius australis (M'Coy, 1867) [Ichthyosaurus australis M'Coy, 1867; †Platypterygius longmani Wade, 1990]
                                 `-- †Simbirskiasaurus birjukovi Ochev & Yefimov, 1985 [Simbirskiasaurus birjukovi Ochev & Yefimov, 1985; Simbirskia birjukovi (Ochev & Efimov, 1985)Platypterygius birjukovi (Ochev & Efimov, 1985) sensu Maisch & Matzke, 2000]

Ophthalmosauridae incertae sedis:

Ancanamunia mollensis Rusconi, 1938 [Myobradypterygius mollensis]
    †Baptanodon marshi Knight, 1903
    †Baptanodon robustus Gilmore, 1905
    †Baptanodon reedi Gilmore, 1907
    †Nannopterygius enthekiodon v. Huene, 1922
    †Paraophthalmosaurus Arkhangel'skii, 1997
        †P. saveljeviensis Arkhangel'skii, 1997
        †P. yasykovi (Efimov, 1999)
    †Otschevia pseudoscythica Efimov, 1998
    †Undorosaurus gorodischensis Efimov, 1999
    †Ophthalmosaurus Seeley, 1874 [Sauranodon; Baptanodon; Microdontosaurus; Ancanamunia Rusconi, 1942; Khudiakovia Arkhangelsky, 1999; Yasykovia Efimov, 1999]
        †O. sp. [Argentina]
        †O. discus (Marsh, 1879) [Sauranodon discus, Baptanodon discus Marsh 1880, Microdontosaurus petersonii Gilmore 1902]
        †O. pleydelli Lydekker, 1890
        †O. monocharactus Appleby, 1956
        †O. undorensis Efimov, 1991
        †O. yasykovi Efimov, 1999
    †Platypterygius von Huene, 1922 sensu Maisch & Matzke, 2000 [Myobradypterygius von Huene, 1927; Simbirskiasaurus Ochev & Yefimov, 1985; Pervushovisaurus Arkhangel'skii, 1998; Plutonisaurus Efimov, 1997; Plutoniosaurus (lapsus calami)]
        †
        †P. bedengensis (Efimov, 1997) [Plutonisaurus bedengensis Efimov, 1997]
        †P. compylodon Carter, 1846
        †P. hauthali (von Huene, 1927) [Myobradypterygius hauthali von Huene, 1927]
        †P. kiprijanoffi (Romer, 1968) [Ichthyosaurus campylodon Kipriyanov, 1881; Myopterygius kiprijanoffi, Romer, 1968]
        †P. ochevi Arkhangelsky, in Arkhangelsky, Averianov, Pervushov, Ratnikov & Zozyrev, 2008
        †P. sp. [cf. Ichthyosaurus australis Etheridge, 1904]


After Fischer et al., 2016

<==o Ophthalmosauria
   `--o †Ophthalmosauridae
      |-- †Arthropterygius chrisorum
      `--+--o †Ophthalmosaurinae
         |  |-- †Mollesaurus perialus
         |  `--+-- †Leninia stellans
         |     |-- †Acamptonectes densus
         |     |-- †Ophthalmosaurus natans
         |     |-- †Ophthalmosaurus icenicus
         |     `--+-- †Cryopterygius kristiansenae
         |        `--+-- †Janusaurus lundi
         |           `-- †Palvennia hoybergeti
         `--o †Platypterygiinae
            |-- †Sveltonectes insolitus
            |-- †Aegirosaurus leptospondylus
            `--+-- †Athabascasaurus bitumineus
               `--+-- †Brachypterygius extremus
                  `--+-- Platypterygius platydactylus
                     `--+-- †Caypullisaurus bonapartei
                        `--+--+-- †Sisteronia seeleyi
                           |  `-- †Platypterygius hercynicus
                           `--+-- †Platypterygius americanus
                              `--+-- †Platypterygius sachicarum
                                 |-- †Pervushovisaurus bannovkensis
                                 |-- †Platypterygius australis
                                 `-- †Simbirskiasaurus birjukovi

Reference(s):

  • Fischer, V., Bardet, N., Benson, R. B. J., Arkhangelsky, M. S. & Friedman, M., 2016: Extinction of fish-shaped marine reptiles associated with reduced evolutionary rates and global environmental volatility.
    –Nat Commun: Vol. 7, #10825 [doi: 10.1038/ncomms10825]

After Motani, 1999

<==o Ophthalmosauria
   `--o †Ophthalmosauridae
      |-- †Brachypterygius
      `--+--o †Ophthalmosaurus
         `--+-- †Caypullisaurus
            `-- †Platypterygius

Reference(s):

Reference(s):