Crocodylus checchiai

Crocodylus checchiai is an extinct species of crocodile from the Pliocene of Libya and the Miocene of Kenya. C. checchiai was named in 1957 from the Sahabi Formation. It is similar in appearance to the Nile crocodile C. niloticus and may even be the same species. Remains from the lower Nawata Formation in the Turkana Basin of Kenya that were first attributed to the Nile crocodile have now been reassigned to C. checchiai, extending its geographic and temporal range.[1]

Crocodylus checchiai
Temporal range: Late Miocene - early Pliocene
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Crocodilia
Family: Crocodylidae
Genus: Crocodylus
Species:
C. checchiai
Binomial name
Crocodylus checchiai
Maccagno, 1957

C. checchiai is one of the oldest species of Crocodylus and is placed at the base of the crocodile radiation. It may be closely related to Neotropical crocodiles like the Orinoco crocodile, or to other African crocodiles like Crocodylus anthropophagus and Crocodylus thorbjarnarsoni. Below is a cladogram from the phylogenetic analysis of Brochu and Storrs (2012), which places C. checchiai at the base of Crocodylus:[1]

 Crocodyloidea 
 

"Asiatosuchus" germanicus

 
 

Prodiplocynodon langi

 
 
 

Asiatosuchus grangeri

 
 

"Crocodylus" affinis

 
 

"Crocodylus" depressifrons

 
 
 

Brachyuranochampsa eversolei

 
 

"Crocodylus" acer

 
 Crocodylidae 
 Tomistominae 
 

Kentisuchus spenceri

 
 
 

Dollosuchoides densmorei

 
 

Megadontosuchus arduini

 
 
 
 
 

Gavialosuchus eggenburgensis

 
 

Toyotamaphimeia machikanensis

 
 
 
 

Tomistoma lusitanica

 
 

Tomistoma schlegelii

 
 
 
 
 

"Tomistoma" cairense

 
 
 

Thecachampsa antiqua

 
 

Thecachampsa americana

 
 

Thecachampsa carolinense

 
 
 
 

Penghusuchus pani

 
 
 

Paratomistoma courti

 
 

Maomingosuchus petrolica

 
 
 
 
 
 
 
 Crocodylinae 
 

"Crocodylus" megarhinus

 
 Mekosuchinae 
 

Kambara implexidens

 
 

Australosuchus clarkae

 
 
 

Trilophosuchus rackhami

 
 

Quinkana

 
 
 
 
 
 

"Crocodylus" pigotti

 
 

"Crocodylus" gariepensis

 
 
 

Euthecodon arambourgii

 
 

Euthecodon brumpti

 
 
 
 Osteolaeminae 
 

Rimasuchus lloydi

 
 
 

Voay robustus

 
 
 

Osteolaemus osborni

 
 

Osteolaemus tetraspis

 
 
 
 
 
 

Mecistops cataphractus

 
 Crocodylus 
 

Crocodylus checchiai

 
 

C. palaeindicus

 
 
 

C. anthropophagus

 
 

C. thorbjarnarsoni

 
 
 

C. niloticus

 
 
 

C. siamensis

 
 
 

C. palustris

 
 
 

C. porosus

 
 

C. johnsoni

 
 

C. mindorensis

 
 
 

C. novaeguineae

 
 

C. raninus

 
 
 
 
 
 
 

C. acutus

 
 

C. intermedius

 
 

C. rhombifer

 
 

C. moreletii

 
 
 
 
 
 
 
 
 
 

References

  1. Brochu, C. A.; Storrs, G. W. (2012). "A giant crocodile from the Plio-Pleistocene of Kenya, the phylogenetic relationships of Neogene African crocodylines, and the antiquity of Crocodylus in Africa". Journal of Vertebrate Paleontology. 32 (3): 587. doi:10.1080/02724634.2012.652324.


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