Most species are grouped into the genus Crocodylus. The other extant genus, Osteolaemus, is monotypic (as is Mecistops, if recognized).
Crocodile farming in Australia
A bask of crocodiles
American crocodile at La Manzanilla, Jalisco, Mexico
A skull of the extinct Voay robustus
Subfamily Crocodylinae
Genus Crocodylus
Crocodylus acutus, American crocodile
Crocodylus cataphractus, slender-snouted crocodile (studies in DNA and morphology suggest this species may be more basal than Crocodylus, so belongs in its own genus, Mecistops).[62]
Crocodylus intermedius, Orinoco crocodile
Crocodylus johnsoni, freshwater crocodile, or Johnstone's crocodile
Crocodylus mindorensis, Philippine crocodile
Crocodylus moreletii, Morelet's crocodile or Mexican crocodile
Crocodylus niloticus, Nile crocodile or African crocodile (the subspecies found in Madagascar is sometimes called the black crocodile)
Crocodylus novaeguineae, New Guinea crocodile
Crocodylus palustris, mugger, marsh or Indian crocodile
Crocodylus porosus, saltwater crocodile or estuarine crocodile
Crocodylus rhombifer, Cuban crocodile
Crocodylus siamensis, Siamese crocodile (may be extinct in the wild)
Crocodylus suchus, West African crocodile, desert or sacred crocodile
Genus Osteolaemus
Osteolaemus tetraspis, dwarf crocodile (There has been controversy as to whether or not this is actually two species; recent (2010) DNA analysis indicate three distinct species: O. tetraspis, O. osborni and a third, currently unnamed.)
Genus †Euthecodon
Genus †Rimasuchus (formerly Crocodylus lloydi)
Genus †Voay Brochu, 2007 (formerly Crocodylus robustus)
Phylogeny
The cladogram below follows the topology from a 2012 analysis of morphological traits by Christopher A. Brochu and Glenn W. Storrs.[63] Many extinct species of Crocodylus might represent different genera. "Crocodylus" pigotti, for example, was placed in the newly erected genus Brochuchus in 2013.[64] C. suchus was not included because its morphological codings were identical to those of C. niloticus. However, the authors suggested that the lack of differences was due to limited specimen sampling, and considered the two species to be distinct. This analysis found weak support for the clade Osteolaeminae.[63] Brochu named Osteolaeminae in 2003 as a subfamily of Crocodylidae separate from Crocodylinae, but the group has since been classified within Crocodylinae. It includes the living genus Osteolaemus as well as the extinct species Voay robustus and Rimasuchus lloydi.
Crocodylinae
A 2013 analysis by Jack L. Conrad, Kirsten Jenkins, Thomas Lehmann, and others did not support Osteolaeminae as a true clade but rather a paraphyletic group consisting of two smaller clades. They informally called these clades "osteolaemins" and "mecistopins". "Osteolaemins" include Osteolaemus, Voay, Rimasuchus, and Brochuchus and "mecistopins" include Mecistops and Euthecodon
Crocodile farming in Australia
A bask of crocodiles
American crocodile at La Manzanilla, Jalisco, Mexico
A skull of the extinct Voay robustus
Subfamily Crocodylinae
Genus Crocodylus
Crocodylus acutus, American crocodile
Crocodylus cataphractus, slender-snouted crocodile (studies in DNA and morphology suggest this species may be more basal than Crocodylus, so belongs in its own genus, Mecistops).[62]
Crocodylus intermedius, Orinoco crocodile
Crocodylus johnsoni, freshwater crocodile, or Johnstone's crocodile
Crocodylus mindorensis, Philippine crocodile
Crocodylus moreletii, Morelet's crocodile or Mexican crocodile
Crocodylus niloticus, Nile crocodile or African crocodile (the subspecies found in Madagascar is sometimes called the black crocodile)
Crocodylus novaeguineae, New Guinea crocodile
Crocodylus palustris, mugger, marsh or Indian crocodile
Crocodylus porosus, saltwater crocodile or estuarine crocodile
Crocodylus rhombifer, Cuban crocodile
Crocodylus siamensis, Siamese crocodile (may be extinct in the wild)
Crocodylus suchus, West African crocodile, desert or sacred crocodile
Genus Osteolaemus
Osteolaemus tetraspis, dwarf crocodile (There has been controversy as to whether or not this is actually two species; recent (2010) DNA analysis indicate three distinct species: O. tetraspis, O. osborni and a third, currently unnamed.)
Genus †Euthecodon
Genus †Rimasuchus (formerly Crocodylus lloydi)
Genus †Voay Brochu, 2007 (formerly Crocodylus robustus)
Phylogeny
The cladogram below follows the topology from a 2012 analysis of morphological traits by Christopher A. Brochu and Glenn W. Storrs.[63] Many extinct species of Crocodylus might represent different genera. "Crocodylus" pigotti, for example, was placed in the newly erected genus Brochuchus in 2013.[64] C. suchus was not included because its morphological codings were identical to those of C. niloticus. However, the authors suggested that the lack of differences was due to limited specimen sampling, and considered the two species to be distinct. This analysis found weak support for the clade Osteolaeminae.[63] Brochu named Osteolaeminae in 2003 as a subfamily of Crocodylidae separate from Crocodylinae, but the group has since been classified within Crocodylinae. It includes the living genus Osteolaemus as well as the extinct species Voay robustus and Rimasuchus lloydi.
Crocodylinae
A 2013 analysis by Jack L. Conrad, Kirsten Jenkins, Thomas Lehmann, and others did not support Osteolaeminae as a true clade but rather a paraphyletic group consisting of two smaller clades. They informally called these clades "osteolaemins" and "mecistopins". "Osteolaemins" include Osteolaemus, Voay, Rimasuchus, and Brochuchus and "mecistopins" include Mecistops and Euthecodon
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Unknown - Thursday, October 11, 2012
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