West African Crocodile

About the West African Crocodile

The West African crocodile, desert crocodile, or sacred crocodile (Crocodylus suchus) is a species of crocodile related to, and often confused with, the larger Nile crocodile (C. niloticus). The species was named by Étienne Geoffroy Saint-Hilaire in 1807, who discovered differences between the skulls of a mummified crocodile and those of Nile crocodile (C. niloticus). However, this new species was long afterwards regarded as a synonym of the Nile crocodile. The advent of DNA analysis would validate Saint-Hilaire's findings; a 2003 study proposed the resurrection of C. suchus, and several other studies conducted between 2011 and 2015 supported Crocodylus suchus as a valid species.

Despite the long history of confusion, genetic testing has revealed that this species and the Nile crocodile are not particularly close: the closest relatives of the Nile crocodile are the Crocodylus species from the Americas, while the West African crocodile diverged before their common ancestor did so; this species is basal to the clade of Nile and New World crocodiles.

Below is a cladogram based on a 2018 tip dating study by Lee & Yates simultaneously using morphological, molecular (DNA sequencing... Wikipedia →