Phylum [Vertebrata] (Lamarck, 1801) Class Reptilia Linnaeus, 1758 - reptiles Subclass †uncertain Order †Plesiosauria Blainville, 1835 - plesiosaurs Family †Pliosauridae Seeley, 1874 Genus †Kronosaurus Longman, 1924 Genus †Liopleurodon Sauvage, 1873 Genus †Macroplata Swinton, 1930 Genus †Peloneustes Lydekker, 1889