Lewisuchus admixtus (Romer 1972) Middle Triassic (235 mya, UNLR 01) ~70 cm, was derived from a sister to Gracilisuchus and PVL 4597 and basal to Pseudhesperosuchus and Turfanosuchus at the base of the protodinosauria.
Slightly larger than Gracilisuchus, the skull of Lewisuchus was more gracile with larger fenestrae.
The cervicals were more gracile with smaller neural spines. The dorsal ribs were smaller.
The scapulocoracoid was gracile, as was the humerus. Only two fingers are known of the manus. The tibia is robust. The blue pelvis and femur are based on Pseudhesperosuchus.
Nesbitt et al. 2014 suggested that Pseudolagosuchus was a possible junior synonym of Lewisuchus, but the two partial specimens share no bones in common. The were coeval and found not far from one another.
UNLR = Universidad Nacional de La Rioja, La Rioja, Argentina
The complete family tree can be seen here.