Ca
- Cacibupteryx Gasparini, Fernández & de la Fuente, 2004 †
- Cadurcogekko,
- Caiman Spix, 1825
- Callawayasaurus Carpenter, 1999 †
- Callawayia (McGowan, 1994) †
- Callisaurus,
- Camptognathosaurus,
- Campylognathoides Strand, 1928 †
- Campylognathoides,
- Campylognathoididae Kuhn, 1967 †
- Campylognathoididae,
- Capelliniosuchus †
- Cargninia,
- Carniadactylus,
- Cartorhynchus Motani, Jiang, Chen, Tintori, Rieppel, Ji & Huang, 2015 †
- Caseosaurus,
- Caviramus,
Ce
- Cearadactylus Leonardi & Borgomanero, 1983 †
- Cercidopleura,
- Ceresiosaurus Peyer, 1931 †
Ch
- Chalarodon,
- Chalishevia,
- Chamaeleo,
- Chamaeleognathus
- Chamaeleonidae,
- Chamaeleonoidea,
- Champsosaurichnus,
- Champsosauridae †
- Champsosauridae,
- Champsosaurus,
- Chanaresuchus,
- Changchengopterus Lü, 2009 †
- Chaohusaurus Young & Dong, 1972 †
- Charactosuchus †
- Chasmatosuchus,
- Chelyoposuchus,
- Chelyposuchus,
- Chimaerasaurus †
- Chimaerasuchidae †
- Chimaerasuchus †
- Chinchenia Young, 1965 †
- Chinchenia,
- Choristodera †
- Choristodera,
- Chthonophidae,
- Chthonophis
Ci
- Cimoliasauridae Delair, 1959 †
Cl
- Clamydosaurus,
- Clarazia Peyer, 1936 †
- Claraziidae Peyer, 1936 †
- Claraziidae,
- Clarencea,
Porodica †Claudiosauridae Carroll 1981
- Rod: Claudiosaurus
Reptilia → Diapsida → Eosuchia → Neodiapsida
†Claudiosaurus Carroll 1981
- †Claudiosaurus germaini Carroll 1981
Reptilia → Diapsida → Eosuchia → Neodiapsida → Claudiosauridae
- Clepsysaurus,
- Clevosauridae,
Cn
- Cnephasaurus,
Co
- Coartaredens,
- Coburgosuchus,
- Coelurosauravidae †
- Coleonyx,
- Collilongus,
- Colymbosaurus Seeley, 1874 †
- Comodactylus Galton, 1981 †
- Comodactylus ostromi,
- Comodactylus,
- Concavispina
- Conchiosaurus,
- Congosaurus †
- Coringasuchus Kellner et al., 2009 †
- Corosauridae,
- Corosaurus Case, 1936 †
- Corosaurus,
- Corytophanes,
- Corytophanidae,
- Corytophaninae,
- Cosesaurus,
Cr
- Creberidentat
- Crenelosaurus nigrosilvanus,
- Crenelosaurus,
- Cretagama
- Cretagamini,
- Cricosaurus †
- Criorhynchus Owen, 1874 †
- Crocodilaemus †
- Crocodilia Owen, 1842
- Crocodylidae Cuvier, 1807
- Crocodylinae
- Crocodylotarsi,
- Crocodylus Laurenti, 1768
- Crosbysaurus,
- Crotaphytidae,
- Crotaphytus,
Crurotarsi Sereno and Arcucci 1990
- Archosauria Cope 1870
- Crocodylotarsi Benton and Clark 1988
- †Euscolosuchus Sues 1992
- †Isochirotherium Haubold 1971
- †Ornithosuchia Huene 1908
- †Phytosauria Jaeger 1828
Diapsida → Archosauromorpha → Archosauriformes
- Cryptoclididae Williston, 1925 †
- Cryptoclidus Seeley, 1892 †
- Crythiosaurinae,
- Crythiosaurus,
Ct
- Cteniogenyidae,
- Cteniogenys,
- Ctenochasma Meyer, 1852 †
- Ctenochasmatidae Nopsca, 1928 †
- Ctenomastax,
- Ctenosaura,
- Ctenosauriscidae †
Cu
†Cuencasaurus Richter 1994
Reptilia → Diapsida → Eosuchia → Lepidosauria → Squamata
†Cuyosuchus Reig, 1961
- †Cuyosuchus huenei Reig 1961
Reptilia → Diapsida → Archosauromorpha → Archosauriformes → Erythrosuchidae
Cy
- Cyamodontida,
- Cyamodontidae †
- Cyamodontidae,
- Cyamodontoidea,
- Cyamodus Meyer, 1863 †
- Cyamodus,
- Cyclura,
- Cycnorhamphus Seeley, 1870 †
- Cymatosauridae Huene, 1948 †
- Cymatosauridae,
- Cymatosaurus Fritsch, 1894 †
- Cymatosaurus,
- Cymbospondylus Leidy, 1868 †
- Cynodontosuchus †
- Cypressaurus,
- Cyrtodactylus,
Cz
†Czatkowiella Borsuk−Białynicka and Evans 2009
- †Czatkowiella harae Borsuk−Białynicka and Evans 2009
Reptilia → Diapsida → Archosauromorpha