Crocodyliformes is a group of reptiles that includes modern crocodiles, alligators, and their extinct relatives. They belong to the clade Archosauria, which also includes birds and dinosaurs. This group is characterized by their semi-aquatic lifestyle, elongated bodies, and powerful jaws, adapted for hunting and feeding. The evolutionary history of Crocodyliformes dates back to the Late Triassic period, over 200 million years ago. Fossils show a diverse range of forms, from small, agile predators to large, formidable creatures. Their adaptations have allowed them to thrive in various environments, making them one of the most successful groups of reptiles.