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45 Subcategories

• Cheloniidae, family Cheloniidae, Chelonidae, family Chelonidae go
  green turtles
  
• Dermochelyidae, family Dermochelyidae go
  sea turtles
  
• Chelydridae, family Chelydridae go
  snapping turtles
  
• Kinosternidae, family Kinosternidae go
  mud turtles
  
• Emydidae, family Emydidae go
  box and water turtles
  
• Testudinidae, family Testudinidae go
  land tortoises
  
• Trionychidae, family Trionychidae go
  soft-shelled turtles
  
• Gekkonidae, family Gekkonidae go
  geckos
  
• Pygopodidae, family Pygopodidae go
  Australian and Tasmanian lizards
  
• Iguanidae, family Iguanidae, Iguania, family Iguania go
  New World lizards
  
• Amphisbaenidae, family Amphisbaenidae go
  worm lizards
  
• Xantusiidae, family Xantusiidae go
  night lizards
  
• Scincidae, family Scincidae go
  skinks
  
• Teiidae, family Teiidae go
  whiptails
  
• Agamidae, family Agamidae go
  an Old World reptile family of Sauria
  
• Anguidae, family Anguidae go
  alligator lizards
  
• Xenosauridae, family Xenosauridae go
  monotypic family of Mexican lizards
  
• Anniellidae, family Anniellidae go
  legless lizards
  
• Lanthanotidae, family Lanthanotidae go
  stout-bodied lizards
  
• Helodermatidae, family Helodermatidae go
  only known venomous lizards
  
• Lacertidae, family Lacertidae go
  Old World lizards
  
• Chamaeleontidae, family Chamaeleontidae, Chamaeleonidae, family Chamaeleonidae, Rhiptoglossa, family Rhiptoglossa go
  Old World chameleons
  
• Varanidae, family Varanidae go
  monitor lizards
  
• Crocodylidae, family Crocodylidae go
  true crocodiles
  
• Alligatoridae, family Alligatoridae go
  alligators
  
• Gavialidae, family Gavialidae go
  gavials
  
• Ceratopsidae, family Ceratopsidae go
  American ceratopsian dinosaurs
  
• Hadrosauridae, family Hadrosauridae go
  duck-billed dinosaurs
  
• Iguanodontidae, family Iguanodontidae go
  iguanodons
  
• Titanosauridae, family Titanosauridae go
  herbivorous dinosaurs of the Cretaceous
  
• Megalosauridae, family Megalosauridae go
  megalosaurs
  
• Dromaeosauridae, family Dromaeosauridae go
  swift-running bipedal dinosaurs
  
• Edaphosauridae, family Edaphosauridae go
  a family of reptiles of the order Pelycosauria
  
• Pterodactylidae, family Pterodactylidae go
  a reptile family in the order Pterosauria
  
• Ichthyosauridae, family Ichthyosauridae go
  later ichthyosaurs of the Jurassic and Cretaceous
  
• Colubridae, family Colubridae go
  nonvenomous snakes
  
• Typhlopidae, family Typhlopidae go
  blind snakes
  
• Leptotyphlopidae, family Leptotyphlopidae go
  blind snakes
  
• Boidae, family Boidae go
  boas and pythons
  
• Pythoninae, subfamily Pythoninae go
  Old World boas: pythons
  
• Pythonidae, family Pythonidae go
  in some classifications a family separate from Boidae comprising Old World boas
  
• Elapidae, family Elapidae go
  cobras
  
• Hydrophidae, family Hydrophidae go
  sea snakes
  
• Viperidae, family Viperidae go
  Old World vipers
  
• Crotalidae, family Crotalidae go
  New World vipers: pit vipers