Rauisuchia

Rauisuchia is a group of predatory and mostly large (often 4 to 6 meters) Triassic archosaurs. As a clade, Rauisuchia includes these Triassic forms and all crocodylomorphs, which are descendants of Triassic rauisuchians. The group in its traditional sense is paraphyletic, because it does not include crocodylomorph descendants. To designate it as an informal group in scientific literature, the name in its traditional sense is often enclosed in quotation marks.