Class Reptilia Linnaeus, 1758 - reptiles Subclass †Parapsida (Williston, 1925) [monotypic] Order †Ichthyosauria Blainville, 1835 Suborder †Omphalosauria Huene, 1923 [monotypic] 1 Family †Omphalosauridae (Merriam, 1906)