Crocodylus

Updated on Sep 25, 2024

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Kingdom Animalia Order Crocodilia Subfamily Crocodylinae Higher classification Crocodile		Phylum Chordata Family Crocodylidae Scientific name Crocodylus

Genus CrocodylusLaurenti, 1768 Lifespan Saltwater crocodile: 70 years, Nile crocodile: 70 – 100 years Speed Saltwater crocodile: 24 – 29 km/h Mass Saltwater crocodile: 400 – 1,000 kg Length Saltwater crocodile: 4.3 – 5.2 m, Nile crocodile: 4.2 m, American crocodile: 4.1 – 4.8 m, Mugger crocodile: 3.2 m Lower classifications Saltwater crocodile, Nile crocodile, American crocodile, Siamese crocodile, Mugger crocodile

Crocodylus park darwin diary mix 104 9

Crocodylus is one of three genera from the subfamily Crocodylinae of the family Crocodylidae.

The 13 living species are:

American crocodile, Crocodylus acutus

Slender-snouted crocodile, Crocodylus cataphractus - studies in DNA and morphology suggest this species may be more basal than Crocodylus and therefore belongs in its own genus, Mecistops.

Orinoco crocodile, Crocodylus intermedius

Freshwater crocodile, Crocodylus johnsoni

Philippine crocodile, Crocodylus mindorensis

Morelet's crocodile or Mexican crocodile, Crocodylus moreletii

Nile crocodile or African crocodile, Crocodylus niloticus (the subspecies found in Madagascar is sometimes called the black crocodile)

New Guinea crocodile, Crocodylus novaeguineae

Mugger crocodile, marsh crocodile, or Indian crocodile, Crocodylus palustris

Saltwater crocodile or estuarine crocodile, Crocodylus porosus

Cuban crocodile, Crocodylus rhombifer

Siamese crocodile, Crocodylus siamensis

West African crocodile or desert crocodile, Crocodylus suchus

Crocodylus raninus (Considered as a synonym of Crocodylus porosus, its status remains unclear.)

Established species also include six extinct species:

† Crocodylus anthropophagus is an extinct crocodile from Plio-Pleistocene of Tanzania.

† Crocodylus bugtiensis is an extinct crocodile from Pakistan

† Crocodylus checchiai is an extinct crocodile from Late Miocene of Kenya.

† Crocodylus falconensis is an extinct crocodile from Early Pliocene of Venezuela.

† Crocodylus palaeindicus is an extinct crocodile the Miocene to the Pleistocene of southern Asia.

† Crocodylus thorbjarnarsoni is an extinct crocodile from Plio-Pleistocene of Kenya.

Crocodylus Crocodiles of Africa crocodiles of the Mediterranean crocodiles of

Australian freshwater crocodile johnston s crocodile crocodylus johnsoni australien krokodil

Phylogeny

Crocodylus Crocodylus rhombifer The Reptile Database

The cladogram below follows the topology from a 2011 analysis of mitochondrial DNA sequences by Robert W. Meredith, Evon R. Hekkala, George Amato and John Gatesy.

Crocodylus Crocodylus mindorensis The Reptile Database

The cladogram below follows the topology from a 2012 analysis of morphological traits by Christopher A. Brochu and Glenn W. Storrs. Many extinct species of Crocodylus might represent different genera. C. suchus was not included, because its morphological codings were identical to these of C. niloticus. However, the authors suggested that it could be explained by their specimen sampling, and considered the two species to be distinct.

Evolution

Crocodylus Crocodylus siamensis Siamese crocodile

Crocodylus species originated from an ancestor in the Indo-Pacific region between 9 million years ago and 16 million years ago. They radiated into Africa between 8 million years ago and 12 million years ago. This was followed between 4 million years ago to 8 million years ago by a trans-Atlantic migration to the Americas.

Crocodylus FilePjara La Lajita Oasis Park Crocodylus niloticus 05 iesjpg

References

Crocodylus Wikipedia

(Text) CC BY-SA

Crocodylus park darwin diary mix 104 9

Contents

Australian freshwater crocodile johnston s crocodile crocodylus johnsoni australien krokodil

Phylogeny

Evolution

References