Rimasuchus is an extinct genus of crocodile from the Miocene of Egypt and possibly Libya. Only one species - Rimasuchus lloydi - is currently known. It was previously thought to be a species of Crocodylus, but is now thought to be more closely related to the modern African dwarf crocodiles (Osteolaemus).

Rimasuchus
Temporal range: 23.03–.781 Ma
Early Miocene – Early Pleistocene
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Crocodilia
Family: Crocodylidae
Subfamily: Crocodylinae
Genus: Rimasuchus
Storrs, 2003
Type species
Rimasuchus lloydi
(Fourtau, 1918)
Synonyms
  • Crocodylus lloydi Fourtau, 1918

Fossil crocodiles from all over Africa and the Middle East of Miocene, Pliocene, and Pleistocene age were previously referred to R. lloydi. The majority are now known to be extinct forms of Crocodylus. The generic name "Rimasuchus" comes from the Latin words rima, meaning "crack" (referencing the East African rift valley),[1] which is ironic because Rimasuchus is not currently known from deposits in East Africa.

Contents

PhylogenyEdit

Cladogram after Brochu C. A., Njau J., Blumenschine R. J., Densmore L. D. (2010).[2]


 Crocodylinae 

Crocodylus megarhinus

 Mekosuchinae 

Kambara

Australosuchus

Trilophosuchus

 Osteolaeminae 

Rimasuchus

"Crocodylus" pigotti

Euthecodon

Voay

Osteolaemus osborni

O. tetraspis

Mecistops

Crocodylus anthropophagus

C. palaeindicus

C. palustris

C. siamensis

C. porosus

C. johnsoni

C. novaeguineae

C. mindorensis

C. niloticus

C. acutus

C. intermedius

C. rhombifer

C. moreletii

See alsoEdit

ReferencesEdit

  1. ^ Leakey, M. G. and Harris, J. M. (2003). Lothagam: the Dawn of Humanity in Eastern Africa. Columbia University Press, New York. ISBN 0-231-11870-8 p. 144
  2. ^ Brochu, C. A.; Njau, J.; Blumenschine, R. J.; Densmore, L. D. (2010). "A new horned crocodile from the Plio-Pleistocene hominid sites at Olduvai Gorge, Tanzania". PLoS ONE. 5 (2): e9333. doi:10.1371/journal.pone.0009333. PMC 2827537. PMID 20195356.

External linksEdit