The Turtles & Tortoises (Testudines) - order

(Pappochelys)
- genera -extinct-

(Proganochelyidae)
- family -extinct-

(Australochelidae)
- family -extinct-

(Proterochersidae)
- family -extinct-

(Indochelyidae)
- family -extinct-

(Heckerochelyidae)
- family -extinct-

(Chelycarapookidae)
- family -extinct-

(Sichuanchelyidae)
- family -extinct-
()

(Solemydidae)
- family -extinct-

(Meiolaniidae)
- family -extinct-

(Otwayemyidae)
- family -extinct-

(Trapalcochelys)
- genera -extinct-

(Chubutemys)
- genera -extinct-

(Peligrochelys)
- genera -extinct-

(Kallokibotiidae)
- family -extinct-
(Pleurodira) - suborder

(Apertotemporalidae)
- family -extinct-

(Platychelyidae)
- family -extinct-

(Dortokidae)
- family -extinct-

(Notoemyidae)
- family -extinct-
(Cheloides) - superfamily

(Chelidae)
- family
(Pelomedusoides) - superfamily

(Araripemydidae)
- family -extinct-
African Sideneck Turtles
(Pelomedusidae)
- family

(Euraxemydidae)
- family -extinct-

(Bothremydidae)
- family -extinct-
Madagascan Big-Headed & American Sideneck River Turtles
(Podocnemididae)
- family
(Cryptodira) - suborder
(Paracryptodira) - infraorder

(Pleurosternidae)
- family -extinct-

(Compsemyidae)
- family -extinct-

(Baenidae)
- family -extinct-
(Eucryptodira) - infraorder

(Macrobaenidae)
- family -extinct-

(Eurysternidae)
- family -extinct-

(Plesiochelyidae)
- family -extinct-

(Xinjiangchelyidae)
- family -extinct-
(unranked) -

(Osteopygidae)
- family -extinct-

(Sinemydidae)
- family -extinct-

(Adocidae)
- family -extinct-
(Trionychoidea) - superfamily
The Pignosed Turtles
(Carettochelyidae)
- family
The Softshelled Turtles
(Trionychidae)
- family
(Testudinoidea) - superfamily

(Haichemydidae)
- family -extinct-

(Lindholmemydidae)
- family -extinct-

(Sinochelyidae)
- family -extinct-
Pond, Box & Water Turtles
(Emydidae)
- family
Asian Turtles
(Geoemydidae)
- family
The True Tortoises
(Testudinidae)
- family
(Americhelydia) -
The Snapping Turtles
(Chelydridae)
- family
(Kinosternoidea) - superfamily
The River Turtles
(Dermatemydidae)
- family
The Mud Turtles
(Kinosternidae)
- family
The Sea Turtles (Chelonioidea) - superfamily

(Toxochelyidae)
- family -extinct-

(Cheloniidae)
- family

(Thalassemydidae)
- family -extinct-
The Leatherback Sea Turtle
(Dermochelyidae )
- family

(Protostegidae)
- family -extinct-