Sa
- Saara
Sacalia Gray, 1870
- Sacalia bealei (Gray, 1831)
- Sacalia quadriocellata (Siebenrock, 1903)
Reptilia → Testudines → Geoemydidae
- Saiphos
- Salea
- Salomonelaps
Saltuarius Couper, Covacevich & Moritz, 1993
- Saltuarius cornutus (Ogilby, 1892)
- Saltuarius eximius Hoskin & Couper, 2013
- Saltuarius kateae Couper, Sadlier, Shea & Worthington-wilmer, 2008
- Saltuarius moritzi Couper, Sadlier, Shea & Worthington-wilmer, 2008
- Saltuarius salebrosus (Covacevich, 1975)
- Saltuarius swaini (Wells & Wellington, 1985)
- Saltuarius wyberba Couper, Schneider & Covacevich, 1997
Reptilia → Squamata → Gekkota → Carphodactylidae
- Salvadora
- Salvator
- Sanzinia
- Saphenophis
- Saproscincus
Podred Sauria Gauthier, 1984
- †Infrared Ascalabota Gilmore 1928
- †Infrared Eolacertilia Robinson 1967
- Infrared Lacertilia
- Niži taksoni: Alethesaurus, Anguisaurus, Dactylopodes, Glaphyrorhynchus, Harpagosaurus, Labyrinthodontes, Lanceosaurus, Megasaurus, Menodon, Nexipodes, Pachypodes, Prionosaurus, Pterodactyli, Rysosteus, Tomodon
Reptilia → Lepidosauromorpha → Lepidosauria → Squamata
Saurodactylus Fitzinger, 1843
- Saurodactylus fasciatus Werner, 1931
- Saurodactylus mauritanicus (Duméril & Bibron, 1836
- Saurodactylus mauritanicus brosseti Bons & Pasteur, 1957
- Saurodactylus mauritanicus mauritanicus (Duméril & Bibron, 1836)
AReptilia → Squamata → Sphaerodactylidae
Sauromalus Duméril, 1856
- Sauromalus ater Duméril, 1856
- Sauromalus ater ater Duméril, 1856
- Sauromalus ater multiforminatus (Tanner & Avery, 1964)
- Sauromalus ater shawi Cliff, 1958
- Sauromalus ater townsendi Dickerson, 1919
- Sauromalus ater tumidus Shaw, 1945
- Sauromalus hispidus Stejneger, 1891
- Sauromalus klauberi Shaw, 1941
- Sauromalus slevini Van Denburgh, 1922
- Sauromalus varius Dickerson, 1919
Reptilia → Squamata → Iguanidae
Nadred Sauropterygia Owen 1861
- Red Nothosauria Baur, 1889 †
- Red Plesiosauria Blainville, 1835 †
- Red Placodontia Cope, 1871 †
- Niži taksoni: Atopodentatus, Cercidopleura, Dicranopleura, Doliovertebra, Eosauropterygia, Lariosauridae, Nothosauria, Nothosauriformes, Pistosauria, Placodontiformes, Simosauria, Sphenosaurus
Porodica †Saurosphargidae Li et al. 2011
- Rodovi: Largocephalosaurus, Saurosphargis, Sinosaurosphargis
†Saurosphargis Frech 1903
- †Saurosphargis volzi Huene 1936
Reptilia → Diapsida → Saurosphargidae
Sc
- Scaphiodontophis
- Scaphiophis
- Scelarcis
- Sceloporus
- Scelotes
- Scincella
- Scincidae
- Scincopus
- Scincus
- Scolecophis
- Scolecoseps
- Scriptosaura
Se
- Seminatrix
- Senticolis
- Sepsina
- Sepsophis
Podred Serpentes Linnaeus, 1758
- Alethinophidia Nopcsa, 1923 [1] [2]
- Scolecophidia Cope, 1864 [1] [2]
- Botrophis de Rochebrune 1880 † [2]
- Serpentes incertae sedis † [1]
- Diablophis Caldwell et al. 2015 † [2]
- Dinilysiidae Romer, 1956 † [2]
- Eophis Caldwell et al. 2015 † [2]
- Goinophis Holman 1976 † [2]
- Lapparentophiidae † [1]
- Lapparentophis Hoffstetter 1960 † [2]
- Lunaophis Albino et al. 2016 † [2]
- Madtsoiidae (Hoffstetter, 1961) † [2]
- Ophidioniscus Pomel 1853 † [2]
- Pachyophiidae Nopcsa, 1923 † [2]
- Palaeophiidae Lydekker, 1888 † [1]
- Portugalophis Caldwell et al. 2015 † [2]
- Protagras Cope 1872 † [2]
- Tetrapodophis Martill et al., 2015 † [1]
- Tomodon Duméril 1853 † [2]
Reptilia → Lepidosauromorpha → Lepidosauria → Squamata
Sh
- Shinisauridae
- Shinisaurus
Si
- Siagonodon
- Sibon
- Sibynomorphus
- Sibynophis
- Siebenrockiella
- Sigaloseps
- Simiscincus
- Simophis
- Simoselaps
- Sinomicrurus
- Sinonatrix
- Siphlophis
- Sirenoscincus
- Sistrurus
- Sitana
Sm
- Smaug
So
- Sonora
- Sordellina
Sp
- Spalerosophis
- Sphaerodactylidae
- Sphaerodactylus
- Sphenodon
- Sphenodontidae
- Sphenomorphus
- Spilotes
- Spondylurus
Sq
Red Squamata Oppel 1811
- Podred Amphisbaenia Gray, 1844
- Podred Autarchoglossa
- Podred Gekkonomorpha
- Porodica Gerrhosauridae Boulenger 1885
- Podred Iguania Cuvier 1817
- Podred Lacertilia Owen 1842
- Porodica Paramacellodidae Estes 1983
- Klad Polyglyphanodontia Alifanov 2000
- Podred Sauria MacCartney 1802
- Klad Scincogekkonomorpha Sukhanov 1961
- Podred Serpentes Linnaeus, 1758
- Niži taksoni: Anomalopsis, Ardeosaurus, Bavarisaurus, Cuencasaurus, Eichstaettisaurus, Eolacerta, Hoyalacerta, Huehuecuetzpalli, Jucaraseps, Lamiasaurus, Liushusaurus, Mosasauria, Olindalacerta, Paikasisaurus, Paraplacosauriops, Parasaurillus, Parviraptor, Polyglyphanodontia, Pseudosaurillus, Scandensia, Vialorophis, Yabeinosaurus
Reptilia → Eosuchia → Neodiapsida → Lepidosauromorpha → Lepidosauria
St
- Staurotypus
- Stegonotus
- Stellagama
- Stenocercus
- Stenodactylus
- Stenolepis
- Stenorrhina
- Sternotherus
- Stigmochelys
- Stoliczkia
- Storeria
- Strobilurus
- Strophurus
Su
†Suchia Krebs 1974
- Niži taksoni: Aetosauria, Crocodiliformes, Gracilisuchus, Paracrocodylomorpha, Prestosuchidae, Rauisuchia, Rauisuchiformes, Shuvosauridae, Teratosauridae, Ticinosuchus, Turfanosuchus
Reptilia → Diapsida → Crurotarsi → Archosauria → Pseudosuchia
- Suta
Sy
- Symphimus
- Sympholis
- Synophis