Genus: Rugosuchus WU, CHENG & RUSSELL, 2001
Etymology: Latin, rugae, "uneven, wrinkled"; referring to the presence of a series of fossae on the dorsal surface of each maxilla; and Greek, souchos, "crocodile."

Species: nonganensis WU, CHENG & RUSSELL, 2001 (Type)
Etymology: In reference to Nong’an County, Jilin Province, Northeastern China; from which the specimens were collected.

Holotype: IGV 33

Locality: Fulongquan Township, Nong’an County, Song-Liao Basin, Jilin Province, Northeastern China.

Horizon: Upper part of Nenjiang Formation.


Age: Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material: Majority of skull with mandible in tight occlusion.

Referred material:

IGV 31: 13 presacral vertebrae, 2 sacral vertebrae, 27 caudal vertebrae, many dorsal osteoderms and some ventral osteoderms, incomplete pelvic girdle and some limb fragments.

IGV 32: 2 sacral vertebrae attached to the first caudal vertebra, left ilium with proximal head of left femur, and some dorsal osteoderms.