The "crocodile-line" archosaurs, which include modern crocodilians (alligators, crocodiles, and gharials) and their extinct relatives.
Archosaurian reptiles aren't just grouped by name; they share unique anatomical traits that set them apart from "typical" reptiles like lizards or snakes: A salute to the Erythrosuchidae - Mark Witton's Blog archosaurian reptile
The story of archosaurian reptiles truly begins in the Triassic period. While other reptile groups were struggling to recover from the Permian-Triassic mass extinction, archosauriforms—the ancestors of "true" archosaurs—began to diversify rapidly. The "crocodile-line" archosaurs
The Masters of the Mesozoic: Unmasking the Archosaurian Reptiles which include modern crocodilians (alligators