Pseudochampsa is an extinct genus of proterochampsid archosauriform known from the Late Triassic (Carnian) Cancha de Bochas Member of the Ischigualasto Formation of San Juan Province, Ischigualasto-Villa Unión Basin in northwestern Argentina.
The holotype consists of a skull with fully occluded lower jaws, a complete vertebral column lacking the outer half of the tail, several neck and back ribs, some haemal arches, some gastralia, the pectoral girdle, both partially preserved humeri, a partial pelvic girdle, and both nearly complete hind-limbs including both femora, tibiae, fibulae, tarsals and feet.
Trotteyn et al. (2012) referred this species to Chanaresuchus and diagnosed Chanaresuchus based on the presence of cranial ornamentation by longitudinal crests and depressions on the upper surfaces of the premaxillae, maxillae and nasal bones, a side fossa on the centrum of the presacral vertebrae, a low deltopectoral crest on the humerus, and the absence of a fifth toe.
They also suggested that R. gracilis, not included in the analysis, might be the sister taxon of C. bonapartei, based on morphology, further supporting the exclusion of P. ischigualastensis from Chanaresuchus.
[2] Proterosuchus fergusi Erythrosuchus africanus Doswellia kaltenbachi Vancleavea campi Euparkeria capensis Parasuchus hislopi Archosauria Proterochampsa barrionuevoi Cerritosaurus binsfeldi Tropidosuchus romeri Chanaresuchus bonapartei Gualosuchus reigi Pseudochampsa ischigualastensis