Crocodilian Species

There are 26 species of crocodilian currently recognised (Hekkala et al. 2011; Shirley et al. 2014, 2018; Eaton 2010). However, evidence suggests that there are two additional species, Osteolaemus aftezelli and Crocodylus halli, which have yet to be formally recognised.


Eaton, M.J. (2010). Dwarf Crocodile Osteolaemus tetraspis. Pp. 127-132 in Crocodiles. Status Survey and Conservation Action Plan. Third Edition. Crocodile Specialist Group: Darwin. Download.

Hekkala, E., Shirley, M.H., Amato, G., Austin, J.D., Charter, S., Thorbjarnarson, J., Vliet, K.A., Houck, M.L., Desalle, R. and Blum, M.J. (2011). An ancient icon reveals new mysteries: mummy DNA resurrects a cryptic species within the Nile crocodile. Molecular Ecology 20: 4195-4215. Download.

Shirley, M.H., Vliet, K.A., Carr, A.N. and Austin, J.D. (2014). Rigorous approaches to species delimitation have significant implications for African crocodile systematics and conservation. Proceedings of the Royal Society B: Biological Sciences 281(1776): 20132483. Download.

Shirley, M.H., Carr, A.N., Nestler, J.H., Vliet, K.A. and Brochu, C.A. (2018). Systemic revision of the living African Slender-snouted crocodiles (Mecistops Gray, 1844). Zootaxa 4504(2): 151-193. Download.

Common Name Species Name Species Description
American Alligator Alligator mississippiensis download pdf
Chinese Alligator
Alligator sinensis
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Spectacled Caiman
Caiman crocodilus
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Broad-snouted Caiman
Caiman latirostris
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Yacare Caiman
Caiman yacare
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Black Caiman
Melanosuchus niger
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Cuvier's Dwarf Caiman
Paleosuchus palpebrosus
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Schneider's Smooth-fronted Caiman
Paleosuchus trigonatus
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American Crocodile
Crocodylus acutus
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West African Slender-snouted Crocodile
Mecistops cataphractus
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Central African Slender-snouted Crocodile
Mecistops leptorhynchus
Orinoco Crocodile
Crocodylus intermedius
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Australian Freshwater Crocodile
Crocodylus johnstoni
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Philippine Crocodile
Crocodylus mindorensis
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Morelet's Crocodile
Crocodylus moreletii
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Nile Crocodile
Crocodylus niloticus
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West African Crocodile
 Crocodylus suchus
New Guinea Freshwater Crocodile Crocodylus novaeguineae download pdf
Mugger Crocodile
Crocodylus palustris
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Saltwater Crocodile Crocodylus porosus download pdf
Cuban Crocodile
Crocodylus rhombifer
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Siamese Crocodile
Crocodylus siamensis
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Dwarf Crocodile
Osteolaemus tetraspis
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Osborn's Dwarf Crocodile
Osteolaemus osborni
Gavialis gangeticus
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Tomistoma schlegelii
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