Erythrosuchidae

From EvoWiki

Erythrosuchidae is a poorly known archosaur clade occupying outrgroup status to Archosauria proper, however their triradiate pelvic girdle and the presence of other archosaur autapomorphies indicates these reptiles were closer to the origin of Archosauria than Proterosuchidae. The erythrosuchids appear to have been formidable predators, and are the largest known terrestrial vertebrates of the Lower Triassic, with lengths exceeding 5 meters. Some of the features of the appendicular skeleton suggest that at least some erythrosuchids may have been secondarily aquatic.

JGK