Named By: E. C. Case - 1922.
Classification: Chordata, Reptilia, Phytosauria, Leptosuchomorpha.
Species: L. crosbiensis (type), L. studeri.
Size: Details unavailable.
Known locations: USA - Chinle Formation.
Time period: Carnian of the Triassic.
Fossil representation: Several individuals.
Leptosuchus is a genus of phytosaur that is currently known from a few species. Phytosaurs like Leptosuchus were very much like crocodiles, though they were not actually directly related to them. An exceptionally large skull once assigned as Leptosuchus gregorii, has since been moved to the genus Smilosuchus, though since this time there has been fresh speculation that Smilosuchus might be synonymous with Leptosuchus.
- New reptiles and stegocephalians from the Upper Triassic of western Texas. - Carnegie Institute of Washington Publication 221:1-84. - E. C. Case - 1922.
- Two new specimens of phytosaurs from the Upper Triassic of Western Texas. - Contributions from the Museum of Paleontology, University of Michigan 1(9):133-142. - E. C. Case & T. E. White - 1934.
- Late Triassic (Carnian and Norian) tetrapods from the southwestern United States. - New Mexico Museum of Natural History and Science Bulletin 4:1-254. - R. A. Long & P. A. Murry - 1995.
- A new taxon of phytosaur (Archosauria: Pseudosuchia) from the Late Triassic (Norian) Sonsela Member (Chinle Formation) in Arizona, and a critical reevaluation of Leptosuchus Case, 1922. - Palaeontology. 53 (5): 997–1022. - Michelle R. Stocker - 2010.