| | Rhynchocephalia | Gephyrosauridae
†Deltadectes |
| | Rhynchocephalia | Gephyrosauridae
†Gephyrosaurus |
| | Rhynchocephalia | Gephyrosauridae
†Penegephyrosaurus |
| | Rhynchocephalia | Sphenodontia
†Diphydontosaurus |
| | Rhynchocephalia | Sphenodontia
†Micromenodon |
| | Rhynchocephalia | Sphenodontia
†Pelecymala |
| | Rhynchocephalia | Sphenodontia
†Rebbanasaurus |
| | Rhynchocephalia | Sphenodontia
†Sphenocondor |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia
†Godavarisaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia
†Planocephalosaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia
†Theretairus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia
†Opisthiamimus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia
†Brachyrhinodon |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia
†Clevosaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia
†Colobops |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia
†Lanceirosphenodon |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia
†Polysphenodon |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia
†Lamarquesaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia
†Pamizinsaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia
†Tingitana |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia
†Whitakersaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia
†Fraserosphenodon |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia
†Opisthias |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia
†Trullidens |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia | Eilenodontinae
†Eilenodon |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia | Eilenodontinae
†Kaikaifilusaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia | Eilenodontinae
†Patagosphenos |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia | Eilenodontinae
†Priosphenodon |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia | Eilenodontinae
†Toxolophosaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae
†Pamizinsaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae
†Zapatadon |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
†Sphenovipera |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
†Cynosphenodon |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
†Tika |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
†Sphenofontis |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
†Navajosphenodon |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
†Kawasphenodon |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
Sphenodon punctatus
tuatara |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia
†Vadasaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia
†Ankylosphenodon |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia
†Homoeosaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia
†Sigmala |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Sapheosauridae
†Kallimodon |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Sapheosauridae
†Leptosaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Sapheosauridae
†Oenosaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Sapheosauridae
†Piocormus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Sapheosauridae
†Sapheosaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Pleurosauridae
†Palaeopleurosaurus |
| | Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Pleurosauridae
†Pleurosaurus |
