"
Rauisuchia" is a group of mostly large (often )
Triassic archosaurs. It belongs to a larger
clade called
Pseudosuchia. "Rauisuchia" is currently considered an
evolutionary grade, or even a
wastebin taxon. It includes most pseudosuchians that lived during the Triassic Period. Since
crocodylomorphs likely originated from an ancestor that would have been a rauisuchian, Rauisuchia in its traditional sense is considered
paraphyletic as it excludes crocodylomorphs. To designate it as an informal group in scientific literature, the name in its traditional sense is often enclosed in quotation marks.