Classification of the clade Thalassophonea
Unr. †Thalassophonea Benson and Druckenmiller 2014
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Subfm. †Brachaucheninae Williston 1925
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G. †Discosaurus Leidy 1851
G. †Kronosaurus Longman 1924
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†Kronosaurus boyacensis Hampe 1992
†Kronosaurus queenslandicus Longman 1924
G. †Liopleurodon Sauvage 1873
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†Liopleurodon ferox Sauvage 1873
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Invalid names: Thaumatosaurus mosquensis Kiprijanoff 1883 [synonym]
†Liopleurodon pachydeirus Seeley 1869
G. †Pliosaurus Owen 1841
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†Pleiosaurus macromerus Phillips 1871
†Pliosaurus almanzaensis O’Gorman et al. 2018
†Pliosaurus andrewsi Tarlo 1960
†Pliosaurus carpenteri Benson et al. 2013
†Pliosaurus funkei Knutsen et al. 2012
†Pliosaurus gamma Phillips 1871
†Pliosaurus grandis Owen 1840
†Pliosaurus grossouvrei Sauvage 1873
†Pliosaurus kevani Benson et al. 2013
†Pliosaurus patagonicus Gasparini and O'Gorman 2014
†Pliosaurus rossicus Novozhilov 1948
†Pliosaurus westburyensis Benson et al. 2013
Invalid names: Cetiosaurus rigauxi Sauvage 1874 [nomen dubium], Ischyrodon Merian 1838 [synonym], Plesiosaurus giganteus Conybeare 1824 [nomen oblitum], Pliosaurus irgisensis Novozhilov 1948 [nomen dubium], Pliosaurus portentificus Noè et al. 2004 [nomen dubium], Spondylosaurus Fischer 1845 [synonym], Stretosaurus Tarlo 1959 [synonym]
G. †Simolestes Andrews 1909
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†Simolestes indicus Lydekker 1877
†Simolestes keileni Godefroit 1994
†Simolestes vorax Andrews 1909
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Invalid names: Thaumatosaurus calloviensis Bogolubov 1912 [synonym]
Invalid names: Pliosaurus brachyspondylus Owen 1840 [nomen dubium], Pliosaurus macromerus Phillips 1871 [nomen dubium]