Sphenosuchia is a grouping of basal crocodylomorphs that first appeared in the Triassic and persisted into the Jurassic. Most were small, gracile animals with an erect limb posture. Although sometimes

Crocodylomorpha is a group of pseudosuchian archosaurs that includes the crocodilians and their extinct relatives. They were the only members of Pseudosuchia to survive the end-Triassic extinction. Ex