Kingdom [Animalia] Linnaeus, 1758 - animals
Subkingdom Metazoa Haeckel, 1874
see Kingdom Animalia Linnaeus, 1758
Division Eumetazoa Butschli, 1910
see Subkingdom Eumetazoa Butschli, 1910
Subdivision Bilateralia
Phylum Chordata Bateson, 1885 - chordates
Subphylum Vertebrata Cuvier, 1812 - vertebrates
Class Reptilia Linnaeus, 1758 - reptiles
Subclass †Synapsida Osborn, 1903 - synapsids
see Class Synapsida Osborn, 1903
Order †Mesosauria Seeley, 1892 [monotypic]
Family †Mesosauridae Baur, 1889 - mesosaurs
Genus †Mesosaurus Gervais, 1865
†Mesosaurus tenuidens Gervais, 1865