What did reptiles evolve into?

Reptiles evolved into a diverse range of species, with some lineages giving rise to birds, which are considered modern-day avian reptiles. Other reptiles, like dinosaurs, dominated the Mesozoic Era before going extinct, while contemporary reptiles, such as snakes, lizards, and turtles, are direct descendants of ancient reptilian ancestors. Overall, reptiles represent a significant evolutionary branch that has adapted to various ecological niches over millions of years.