I do not intend to present an equivalent cladistic taxonomy of Class Reptilia, for two reasons. First, I don't know where one can be obtained, or even if the information necessary to create one has yet been acquired for the whole class;
and, second, this newsletter isn't big enough to hold one if it does exist!
| Subclass Anapsida (Note 1) |
| | Order Testudines (turtles) |
| | | Suborder Cryptodira |
| | | | Superfamily Testudinoidea |
| | | | | Family Chelydridae (Snapping Turtles) |
| | | | | Family Emydidae (Pond Turtles/Box and Water Turtles) |
| | | | | Family Testudinidae (Tortoises) |
| |
| | | | Superfamily Trionychoidea |
| | | | | Family Dermatemydidae (River Turtles) |
| | | | | Family Kinosternidae (Mud and Musk Turtles) |
| | | | | Family Carettochelyidae (Pig-nose Turtles) |
| | | | | Family Trionychidae (Softshell Turtles) |
| |
| | | | Superfamily Chelonioidea |
| | | | | Family Cheloniidae (Sea Turtles) |
| | | | | Family Dermochelyidae (Leatherback Turtles) |
| |
| | | Suborder Pleurodira |
| | | | Family Pelomedusidae (Afro-American Sideneck Turtles) |
| | | | Family Chelidae (Austro-American Sideneck Turtles) |
| |
| Subclass Lepidosauria |
| | Order Rhynchocephalia |
| | | Suborder Sphenodontida |
| | | | Family Sphenodontidae (Tuataras) |
| |
| | Order Squamata ("scaled reptiles") |
| | | Suborder Sauria (lizards) |
| | | | Infraorder Iguania |
| | | | | Family Agamidae (Agamas) |
| | | | | Family Chamaeleonidae (Chameleons) |
| | | | | Family Iguanidae (Iguanas and Spinytail Iguanas) |
| | | | | Family Corytophanidae (Casquehead Lizards) |
| | | | | Family Crotaphytidae (Collared and Leopard Lizards) |
| | | | | Family Hoplocercidae |
| | | | | Family Opluridae (Madagascar iguanids) |
| | | | | Family Phrynosomatidae (Earless, Spiny, Tree, Side-blotched and Horned Lizards) |
| | | | | Family Polychrotidae (Anoles) |
| | | | | Family Tropiduridae (Neotropical Ground Lizards) |
| |
| | | | Infraorder Gekkota |
| | | | | Family Gekkonidae (Geckoes) |
| | | | | Family Eublepharidae (Eyelid Geckoes) |
| | | | | Family Pygopodidae (Legless Lizards) |
| | | | | Family Dibamidae (Blind Lizards) |
| |
| | | | Infraorder Scincomorpha |
| | | | | Family Cordylidae (Spinytail Lizards) |
| | | | | Family Gerrhosauridae |
| | | | | Family Gymnophthalmidae (Spectacled Lizards) |
| | | | | Family Teiidae (Whiptails and Tegus) |
| | | | | Family Lacertidae (Wall Lizards) |
| | | | | Family Scincidae (Skinks) |
| | | | | Family Xantusiidae (Night Lizards) |
| |
| | | | Infraorder Diploglossa |
| | | | | Family Anguidae (Glass Lizards and Alligator Lizards; Lateral Fold Lizards) |
| | | | | Family Anniellidae (American Legless lizards) |
| | | | | Family Xenosauridae (Knob-scaled Lizards) |
| |
| | | | Infraorder Platynota (Varanoidea) |
| | | | | Family Helodermatidae (Gila Monsters) |
| | | | | Family Lanthanotidae (Earless Monitor lizards) |
| | | | | Family Varanidae (Monitor Lizards) |
| |
| | | Suborder Serpentes (snakes) |
| | | | Superfamily Typhlopoidea (Scolecophidia) |
| | | | | Family Anomalepidae (Dawn Blind Snakes) |
| | | | | Family Typhlopidae (Blind Snakes) |
| | | | | Family Leptotyphlopidae/Glauconiidae (Slender Blind Snakes) |
| |
| | | | Superfamily Henophidia (Boidea) |
| | | | | Family Aniliidae/Ilysiidae (Pipe Snakes) |
| | | | | Family Anomochilidae (Dwarf Pipe Snakes) |
| | | | | Family Boidae (Boas and Pythons) |
| | | | | Family Bolyeridae (Round Island Boas) |
| | | | | Family Cylindrophiidae (Asian Pipe Snakes) |
| | | | | Family Loxocemidae (Mexican Burrowing Pythons) |
| | | | | Family Tropidophiidae (Woodsnakes, Round Island "Boas ") |
| | | | | Family Uropeltidae (Short-tail Snakes) |
| | | | | Family Xenopeltidae (Sunbeam Snakes) |
| |
| | | | Superfamily Xenophidia (Colubroidea = Caenophidia) |
| | | | | Family Acrochordidae (File Snakes) |
| | | | | Family Atractaspididae (Mole Vipers) |
| | | | | Family Colubridae (Colubrids) |
| | | | | Family Elapidae (Cobras, Kraits, Coral Snakes) |
| | | | | Family Hydrophiidae (Sea Snakes) |
| | | | | Family Viperidae (Vipers and Pit Vipers) |
| |
| | | Suborder Amphisbaenia (amphisbaenians) |
| | | | Family Amphisbaenidae (Worm Lizards) |
| | | | Family Trogonophidae (Shorthead Worm Lizards) |
| | | | Family Bipedidae (Two-legged Worm Lizards) |
| |
| Subclass Archosauria |
| | Order Crocodylia |
| | | Suborder Eusuchia |
| | | | Family Crocodylidae (Crocodiles) |