Which evolved during the triassic period?

During the Triassic period, which lasted from about 252 to 201 million years ago, the first true mammals and dinosaurs evolved. This era also saw the emergence of various reptiles, including the ancestors of modern crocodiles and turtles. Additionally, the period was significant for the diversification of plant life, with the rise of gymnosperms. Overall, the Triassic laid the groundwork for major evolutionary developments in both terrestrial and marine ecosystems.