From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Temporal range: Late Triassic, 235.0–221.5 Ma
Mount in Japan
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Suchia
Clade: Paracrocodylomorpha
Branch: Poposauroidea
Family: Shuvosauridae
Genus: Sillosuchus
Alcober and Parrish, 1997
  • S. longicervix Alcober and Parrish, 1997 (type)
Restoration of Sillosuchus longicervix

Sillosuchus is a genus of poposaurid crurotarsans from the Late Triassic of Argentina.[1] It had an estimated length of about 3 m (10 ft).[2]

The generic name refers to Dr. William Sill, and suchus, from the Greek word meaning "crocodile". A reconstruction of the fossil was presented in 2008 by the National University of San Juan in Argentina, in an homage to Dr. William Dudley Sill who was an important promoter of paleontology in San Juan.[3]

Sillosuchus is the only poposaurid currently known from outside North America. Other members of the clade include Shuvosaurus, Poposaurus and Effigia.[4][5]


  1. ^ Alcober O, Parrish JM. 1997. A new poposaurid from the upper Triassic of Argentina. Journal of Vertebrate Paleontology 17:548–556.
  2. ^
  3. ^ "Archived copy". Archived from the original on 2012-04-03. Retrieved 2012-04-03.
  4. ^ Nesbitt SJ, Norell MA. 2006. Extreme convergence in the body plans of an early suchian (Archosauria) and ornithomimid dinosaurs (Theropoda). Proceedings of the Royal Society of London B 273: 1045–1048.
  5. ^ Nesbitt S. 2007. The anatomy of Effigia okeeffeae (Archosauria, Suchia), theropod-like convergence, and the distribution of related taxa. Bulletin of the American Museum of Natural History 302: 84 pp.