| Sauropterygia †Atopodentatus |
| Sauropterygia | Helveticosauridae †Eusaurosphargis |
| Sauropterygia | Helveticosauridae †Helveticosaurus |
| Sauropterygia | Saurosphargidae †Largocephalosaurus |
| Sauropterygia | Saurosphargidae †Saurosphargis |
| Sauropterygia | Saurosphargidae †Sinosaurosphargis |
| Sauropterygia | Placodontiformes †Palatodonta |
| Sauropterygia | Placodontiformes †Pararcus |
| Sauropterygia | Placodontiformes | Placodontia | Placodontoidea | Paraplacodontidae †Paraplacodus |
| Sauropterygia | Placodontiformes | Placodontia | Placodontoidea | Placodontidae †Placodus |
| Sauropterygia | Placodontiformes | Placodontia | Cyamodontoidea †Sinocyamodus |
| Sauropterygia | Placodontiformes | Placodontia | Cyamodontoidea †Psephosauriscus |
| Sauropterygia | Placodontiformes | Placodontia | Cyamodontoidea †Psephosaurus |
| Sauropterygia | Placodontiformes | Placodontia | Cyamodontoidea | Cyamodontidae †Cyamodus |
| Sauropterygia | Placodontiformes | Placodontia | Cyamodontoidea | Cyamodontidae †Protenodontosaurus |
| Sauropterygia | Placodontiformes | Placodontia | Cyamodontoidea | Henodontidae †Henodus |
| Sauropterygia | Placodontiformes | Placodontia | Cyamodontoidea | Henodontidae †Parahenodus |
| Sauropterygia | Placodontiformes | Placodontia | Cyamodontoidea | Placochelyidae †Psephoderma |
| Sauropterygia | Placodontiformes | Placodontia | Cyamodontoidea | Placochelyidae †Glyphoderma |
| Sauropterygia | Placodontiformes | Placodontia | Cyamodontoidea | Placochelyidae †Placochelys |
| Sauropterygia | Placodontiformes | Placodontia | Cyamodontoidea | Placochelyidae †Psephosauriscus |
| Sauropterygia | Placodontiformes | Placodontia | Cyamodontoidea | Placochelyidae †Psephochelys |
| Sauropterygia | Eosauropterygia †Panzhousaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea †Brevicaudosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Nothosauria | Simonsauridae †Simosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Nothosauria | Nothosauridae †Germanosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Nothosauria | Nothosauridae | Nothosaurinae †Nothosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Nothosauria | Nothosauridae | Lariosaurinae †Lariosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Nothosauria | Nothosauridae | Lariosaurinae †Ceresiosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Nothosauria | Nothosauridae | Lariosaurinae †Silvestrosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria †Majiashanosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria †Diandongosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria †Dianmeisaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria †Dawazisaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria †Panzhousaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria †Hanosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria †Honghesaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria †Qianxisaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria †Wumengosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria | Keichousauridae †Dianopachysaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria | Keichousauridae †Keichousaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria | Pachypleurosauridae †Dactylosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria | Pachypleurosauridae †Anarosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria | Pachypleurosauridae †Odoiporosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria | Pachypleurosauridae †Serpianosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria | Pachypleurosauridae †Neusticosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria | Pachypleurosauridae †Prosantosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria | Pachypleurosauridae †Qianxisaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria | Pachypleurosauridae †Luopingosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria | Pachypleurosauridae †Pachypleurosaurus |
| Sauropterygia | Eosauropterygia | Nothosauroidea | Pachypleurosauria | Pachypleurosauridae †Chusaurus |
| Sauropterygia | Eosauropterygia | Pistosauroidea †Chinchenia |
| Sauropterygia | Eosauropterygia | Pistosauroidea †Kwangsisaurus |
| Sauropterygia | Eosauropterygia | Pistosauroidea †Wangosaurus |
| Sauropterygia | Eosauropterygia | Pistosauroidea | Corosauridae †Corosaurus |
| Sauropterygia | Eosauropterygia | Pistosauroidea | Cymatosauridae †Cymatosaurus |
| Sauropterygia | Eosauropterygia | Pistosauroidea | Pistosauria †Bobosaurus |
| Sauropterygia | Eosauropterygia | Pistosauroidea | Pistosauria †Yunguisaurus |
| Sauropterygia | Eosauropterygia | Pistosauroidea | Pistosauria †Augustasaurus |
| Sauropterygia | Eosauropterygia | Pistosauroidea | Pistosauria | Pistosauridae †Pistosaurus |
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