Reptilia - Sauropterygia

Invalid subtaxa: Cimoliasaurus leucoscopelus Etheridge, Jr. 1897 [nomen dubium], Dolichorhynchopidae Welles 1962

Parent taxon: Leptocleidia according to R. B. J. Benson and P. S. Druckenmiller 2013

Sister taxon: Leptocleididae

Subtaxa: Ceraunosaurus, Dolichorhynchops, Edgarosaurus, Eopolycotylus, Georgiasaurus, Manemergus, Pahasapasaurus, Palmulainae, Palmulasaurinae, Palmulasaurus, Piratosaurus, Plesiopleurodon, Polycotyilnae, Polycotylinae, Sulcusuchus, Thililua, Trinacromerum

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Ecology: aquatic carnivore