Summary:

- This article discusses how ancient crocodilian ancestors survived the mass extinction event that wiped out the dinosaurs around 66 million years ago. Crocodilians, which include modern crocodiles, alligators, and caimans, are one of the few groups of animals that have survived since the time of the dinosaurs.

- The research shows that the ancestors of modern crocodilians were able to adapt to the drastic environmental changes that occurred after the asteroid impact that caused the mass extinction. They were able to thrive in a variety of habitats, including freshwater and saltwater environments, and were able to tolerate changes in temperature and climate.

- The study provides insights into how some species were able to survive the mass extinction event, while others, like the dinosaurs, perished. Understanding the adaptations and survival strategies of crocodilian ancestors can help scientists better understand the factors that contribute to the resilience of certain species in the face of major environmental changes.