The Reptiles (Reptilia) - class
(Archosauria) - subclass
The Alligators, Caimans, Crocodiles & Gharials (Crocodilia) - Order
(Crocodilidae) - family
(Crocodylus)
American Crocodile
(Crocodylus acutus)

(Crocodylus anthropophagus)
-extinct-

(Crocodylus bugtiensis )
-extinct-
Slender-Snouted Crocodile
(Crocodylus cataphractus)

(Crocodylus checchiai)
-extinct-
Orinoco Crocodile
(Crocodylus intermedius)
Freshwater Crocodile
(Crocodylus johnsoni)
Philippine Crocodile
(Crocodylus mindorensis)
Morelet's Crocodile
(Crocodylus moreletii)
New Guinea Crocodile
(Crocodylus novaeguineae)
-extinct-
(Crocodylus palaeindicus)
Nile Crocodile
(Crocodylus niloticus)
Black Crocodile
(Crocodylus niloticus)
Mugger Crocodile
(Crocodylus palustris)
Saltwater Crocodil
(Crocodylus porosus)
Crocodile
(Crocodylus raninus)
Cuban Crocodile
(Crocodylus rhombifer)
Siamese Crocodile
(Crocodylus siamensis)
West African Crocodile
(Crocodylus suchus)
-extinct-
(Crocodylus thorbjarnarsoni)
(Macistops)

(Macistops )

()

()

()
(Osteolaemus)
Dwarf Crocodile
(Osteolaemus tetraspis)
The Gavials (Gavialidae) - family
(Tomistoma)

(Tomistoma )
(Gavialis)

(Gavialis bengawanicus)

(Gavialis breviceps)

(Gavialis browni)

(Gavialis curvirostris)
Gharial
(Gavialis )

(Gavialis )

(Gavialis )

(Gavialis )

(Gavialis )
The Alligators & Caimans (Alligatoridae) - family
(Alligatorinae) subfamily
(Alligator)

(Alligator mcgrewi)

(Alligator mefferdi)
American Aligator
(Alligator mississippiensis)

(Alligator olseni)
Alligator
(Alligator prenasalis)
-extinct-
Chinese Alligator
(Alligator sinensis)
(Allognathosuchus)

(Allognathosuchus gracilis)

(Allognathosuchus heterodon)

(Allognathosuchus isolatus)

(Allognathosuchus mooki)

(Allognathosuchus polyodon)

(Allognathosuchus wartheni)

(Allognathosuchus woutersi)
(Arambourgia)

(Arambourgia )
(Ceratosuchus)

(Ceratosuchus )
(Chrysochampsa)

(Chrysochampsa mlynarskii)
(Hassiacosuchus)

(Hassiacosuchus )
(Krabisuchus)

(Krabisuchus )
(Navajosuchus)

(Navajosuchus )
(Procaimanoidea)

(Procaimanoidea )
(Wannaganosuchus)

(Wannaganosuchus )
(Caimaninae) subfamily
(Caiman)
Spectacled Caiman
(Caiman crocodilus)
Broad-Snouted Caiman
(Caiman latirostris)

(Caiman lutescens)
-extinct-

(Caiman venezuelensis)
-extinct-
Yacare Caiman
(Caiman yacare)
(Culebrasuchus)

(Culebrasuchus mesoamericanus)
-extinct-
(Eocaiman) -extinct-

(Eocaiman cavernensis)
-extinct-

(Eocaiman itaboraiensis)
-extinct-

(Eocaiman palaeocenicus)
-extinct-
(Mourasuchus) -extinct-

(Mourasuchus amazonensis)
-extinct-

(Mourasuchus arendsi)

(Mourasuchus atopus)

(Mourasuchus nativus)
(Paleosuchus)
Cuvier's Dwarf Caiman
(Paleosuchus palpebrosus)
Smooth-Fronted Caiman
(Paleosuchus trigonatus)
(Melanosuchus)

(Melanosuchus fisheri)
Black Caiman
(Melanosuchus niger)
(Centenariosuchus) -extinct-

(Centenariosuchus gilmorei)
-extinct-
(Globidentosuchus) -extinct-

(Globidentosuchus gilmorei)
-extinct-
(Purussaurus) -extinct-

(Purussaurus brasiliensis)
-extinct-

(Purussaurus neivensis)
-extinct-

(Purussaurus mirandai)
-extinct-
(Necrosuchus) -extinct-

(Necrosuchus ionensis)
-extinct-
(Orthogenysuchus) -extinct-

(Orthogenysuchus olseni)
-extinct-
(Tsoabichi) -extinct-

(Tsoabichi greenriverensis)
-extinct-