# List of crocodilians

Crocodilia is an order of mostly large, predatory, semiaquatic reptiles, which includes true crocodiles, the alligators, and caimans; as well as the gharial and false gharial. A member of this order is called a crocodilian, or colloquially a crocodile.
The 9 genera and 28 species of Crocodilia are split into 3 subfamilies: Alligatoridae, alligators and caimans; Crocodylidae, true crocodiles; and Gavialidae, the gharial and false gharial.

## Conventions

Conservation status codes listed follow the International Union for Conservation of Nature (IUCN) Red List of Threatened Species. Range maps are provided wherever possible; if a range map is not available, a description of the crocodilian's range is provided. Ranges are based on the IUCN red list for that species unless otherwise noted. All extinct species or subspecies listed alongside extant species went extinct after 1500 CE, and are indicated by a dagger symbol "†". Population figures are rounded to the nearest hundred.

## Classification

The order Crocodilia consists of 28 extant species belonging to 9 genera. This does not include hybrid species or extinct prehistoric species. Modern molecular studies indicate that the 9 genera can be grouped into 3 families.
Family Alligatoridae (Alligators and caimans)
* Genus Alligator: two species
* Genus Caiman: three species
* Genus Melanosuchus: one species
* Genus Paleosuchus: two species
Family Crocodylidae (True crocodiles)
* Genus Crocodylus: fourteen species
* Genus Mecistops: two species
* Genus Osteolaemus: two species
Family Gavialidae (Gharial and false gharial)
* Genus Gavialis: one species
* Genus Tomistoma: one species

## Crocodilians
### Family Alligatoridae

The extant Alligatoridae can be recognised by the broad snout, in which the fourth tooth of the lower jaw cannot be seen when the mouth is closed.
Genus Alligator – Cuvier, 1807 – two species :
| Common name | Scientific name and subspecies | Range | Size and ecology | IUCN status and estimated population |
| American alligator | A. mississippiensis Daudin, 1801 | Southeastern United States | Size: up to 450 kg (990 lb) Habitat: Wetlands (inland), intertidal marine, and coastal marine Diet: | LC  750,000–1,060,000 |
| Chinese alligator | A. sinensis Fauvel, 1879 | Eastern China | Size: up to 45 kg (99 lb) Habitat: Inland wetlands Diet: | CR  50–100 |
Genus Caiman – Spix, 1825 – three species :
| Common name | Scientific name and subspecies | Range | Size and ecology | IUCN status and estimated population |
| Spectacled caiman | C. crocodilus Linnaeus, 1758 | Northern South America and Central America | Size: up to 45 kg (99 lb) Habitat: Forest, savanna, shrubland, grassland, and inland wetlands Diet: | LC  1,000,000 |
| Broad-snouted caiman | C. latirostris Daudin, 1802 | Southeastern South America | Size: up to 50 kg (110 lb) Habitat: Inland wetlands and intertidal marine Diet: | LC  500,000 |
| Yacare caiman | C. yacare Daudin, 1802 | Central and southern South America | Size: up to 60 kg (130 lb) Habitat: Inland wetlands Diet: | LC  2,000,000–5,000,000 |
Genus Melanosuchus – Gray, 1862 – one species :
| Common name | Scientific name and subspecies | Range | Size and ecology | IUCN status and estimated population |
| Black caiman | M. niger Spix, 1825 | Northern South America | Size: up to 500 kg (1,100 lb) Habitat: Diet: | LC  Roughly 1,000,000 |
Genus Paleosuchus – Gray, 1862 – two species :
| Common name | Scientific name and subspecies | Range | Size and ecology | IUCN status and estimated population |
| Cuvier's dwarf caiman | P. palpebrosus Cuvier, 1807 | Northern and central South America | Size: typically 6–7 kg (13–15 lb) Habitat: Inland wetlands Diet: | LC  Unknown |
| Smooth-fronted caiman | P. trigonatus Schneider, 1801 | Northern South America | Size: typically 9–20 kg (20–44 lb) Habitat: Forest and inland wetlands Diet: | LC  Unknown |

### Family Crocodylidae

The extant Crocodylidae have a variety of snout shapes, but can be recognised because the fourth tooth of the lower jaw is visible when the mouth is closed.
Genus Crocodylus – Laurenti, 1768 – fourteen species :
| Common name | Scientific name and subspecies | Range | Size and ecology | IUCN status and estimated population |
| American crocodile | C. acutus Cuvier, 1807 | Northern South America, Central America, Greater Antilles | Size: up to 500 kg (1,100 lb) Habitat: Forest, neritic marine, intertidal marine, and coastal marine Diet: | VU  Unknown |
| Hall's New Guinea crocodile | C. halli Murray, Russo, Zorrilla, McMahan, | New Guinea | Size: up to 3.5 m (11 ft) for males and 2.7 m (8.9 ft) for females Habitat: Swamps, rivers, and lakes Diet: | LC  50,000–100,000 |
| Orinoco crocodile | C. intermedius Graves, 1819 | Northern South America | Size: up to 635 kg (1,400 lb) Habitat: Forest, savanna, and inland wetlands Diet: | CR  90–250 |
| Freshwater crocodile | C. johnstoni Krefft, 1873 | Northern Australia | Size: up to 100 kg (220 lb) Habitat: Inland wetlands Diet: | LC  Unknown |
| Philippine crocodile | C. mindorensis Schmidt, 1935 | Philippines | Size: up to 90 kg (200 lb) Habitat: Inland wetlands Diet: | CR  50–150 |
| Morelet's crocodile | C. moreletii Duméril, 1851 | Eastern Mexico | Size: up to 150 kg (330 lb) Habitat: Inland wetlands Diet: | LC  79,000–100,000 |
| Nile crocodile | C. niloticus Laurenti, 1768 | Sub-Saharan Africa | Size: up to 750 kg (1,650 lb) Habitat: Inland wetlands, neritic marine, intertidal marine, and coastal marine Diet: | LC  50,000–70,000 |
| New Guinea crocodile | C. novaeguineae Schmidt, 1928 | New Guinea | Size: up to 200 kg (440 lb) Habitat: Inland wetlands Diet: | LC  100,000 |
| Mugger crocodile | C. palustris Lesson, 1831 | Southern Asia | Size: up to 400 kg (880 lb) Habitat: Inland wetlands and neritic marine Diet: | VU  5,700–8,700 |
| Saltwater crocodile | C. porosus Schneider, 1801 | South and Southeast Asia, northern Australia and Oceania | Size: up to 1,000 kg (2,200 lb) Habitat: Diet: | LC  Unknown |
| Borneo crocodile | C. raninus Müller, 1844 | Borneo | Size: Habitat: Diet: | NE  Unknown |
| Cuban crocodile | C. rhombifer Cuvier, 1807 | Cuba | Size: up to 215 kg (474 lb) Habitat: Inland wetlands Diet: | CR  3,000–5000 |
| Siamese crocodile | C. siamensis Schneider, 1801 | Southeast Asia | Size: up to 120 kg (260 lb) Habitat: Inland wetlands Diet: | CR  500–1,000 |
| West African crocodile | C. suchus Geoffroy, 1807 | Western and central Africa | Size: Habitat: Diet: | NE  Unknown |
Genus Mecistops – Gray, 1844 – two species :
| Common name | Scientific name and subspecies | Range | Size and ecology | IUCN status and estimated population |
| West African slender-snouted crocodile | M. cataphractus F. Cuvier, 1825 | Western Africa | Size: up to 325 kg (717 lb) Habitat: Forest, savanna, inland wetlands, neritic marine, and coastal marine Diet: | CR  1,000–20,000 |
| Central African slender-snouted crocodile | M. leptorhynchus Bennett, 1835 | Central Africa | Size: Habitat: Diet: | NE  Unknown |
Genus Osteolaemus – Cope, 1861 – two species :
| Common name | Scientific name and subspecies | Range | Size and ecology | IUCN status and estimated population |
| Osborn's dwarf crocodile | O. osborni Schmidt, 1919 | Congo Basin | Size: Habitat: Diet: | NE  Unknown |
| Dwarf crocodile | O. tetraspis Cope, 1861 | Western Africa | Size: Habitat: Diet: | VU  Unknown |

### Family Gavialidae

Gavialidae can be recognised by the long narrow snout, with an enlarged boss at the tip.
Genus Gavialis – Oppel, 1811 – one species :
| Common name | Scientific name and subspecies | Range | Size and ecology | IUCN status and estimated population |
| Gharial | G. gangeticus Gmelin, 1789 | Scattered south Asia | Size: up to 680 kg (1,500 lb) Habitat: Wetlands (inland) Diet: | CR  300–900 |
Genus Tomistoma – Müller, 1846 – one species :
| Common name | Scientific name and subspecies | Range | Size and ecology | IUCN status and estimated population |
| False gharial | T. schlegelii Müller, 1838 | Southeast Asia | Size: up to 270 kg (600 lb) Habitat: Forest and inland wetlands Diet: | EN  2,500–10,000 |