| Gewervelde Dieren (Vertebrata) |
| Vissen | Amfibien | Reptielen (Reptilia) |
Vogels | Zoogdieren |
| Slangen (Serpentes) |
Schildpadden (Testudines) |
Hagedissen (Sauria) |
Krokodillen (Crocodilia) |
| Prehistorisch (Amphichelydia) |
Halswenders (Pleurodira) |
Halsbergers (Cryptodira) |
| Chelidrodea | Testudinioidea | Dermochelyoidea | Trionychoidea | Chelospharginae |
| Dermatemyidae | Emydidae | Dermochelyidae | Trionychidae | Protostegidae |
| Sinemydidae | Batagurinae | Carettochelyidae | Chelonioidae | |
| Chelydridae | Emydinae | Carettochelyinae | Protosteginae | |
| Kinosternidae | Platysternidae | Trionychinae | Desmatochelyidae | |
| Kinosterninae | Testudinidae | Anosteirinae | Toxochelyidae | |
| Stauroypinae | Ptychogastridae | Cyclanorbinae | Toxochelyinae | |
| Lophochelyinae | ||||
| Osteopyginae |